Chemistryacademic

What is the electronic geometry and the molecular geometry of BF3?

What is the name for CH3CO2-

"What is the molecular geometry of carbon dioxide, CO₂? A. bent B. linear C. tetrahedral D. trigonal pyramidal E. not enough information"

"Which equation is balanced? A. 2Al + 3F2 → 2AlF3 ​ B. Al + 3O2 → Al2O3 C. Na + F2 → 2NaF D. Mg + 2O2 → 2MgO"

What is the molecular geometry of C2H4?

"Draw the Lewis structure of HCN. Include lone pairs."" is a complete question. It clearly asks for: The Lewis structure of hydrogen cyanide (HCN). That lone pairs should be shown."

How many valence electrons does a nitrogen atom possess?

Although silver can form +1 and +2 cations, the +2 is so rare that we usually name Ag+ silver ion, not silver(I) ion. Ag2+ is named silver(II) ion.

"For each ionic compound formula, identify the main group to which X belongs: (c) X(NO3)2 ​"

"Choose the two-letter symbol from the periodic table. A. Fe B. Mg C. Zn D. Sn"

Draw a Lewis structure for NO, indicating whether NO could be expected to be a stable molecule from the Lewis structure. Draw a molecular orbital diagram for NO. Does MO theory predict NO to be stable (include bond order in your answer)? Comment on the differences between predictions from the Lewis structure and that from MO theory.

What is the molar mass of butane, C4H10 ? I got 58.12 g/mol Calculate the mass of water produced when 8.80 g of butane reacts with excess oxygen. Calculate the mass of butane needed to produce 76.2 g of carbon dioxide.

What is the IUPAC name for the compound shown? # 2011 ## 2011

(+)-Tartaric acid has a specific rotation of +12.0°. What is the specific rotation of a mixture of 75% (+)-tartaric acid and 25% (-)-tartaric acid? A. +4.0° B. +6.0° C. +8.0° D. +9.0°

Which of the following statements best describes a limiting reactant? A. It is the reactant that determines the amount of product formed. B. It is the reactant that remains when the reaction is complete. C. It is the reactant that has the smallest mass. D. It is the reactant that reacts the fastest.

What is the molecular geometry of NF3? A. Trigonal pyramidal B. Tetrahedral C. Trigonal planar D. Bent

Is sulfur a metal or a nonmetal? How many valence electrons does a sulfur atom have?

What is the molar mass of fluorine gas, F 2 ?

How do you find the van't Hoff factor?

Fill in the subshell from which the electron is removed to form a +1 cation and the subshell to which the electron is added to form a -1 anion. Atom Subshellfromwhichelectronisremovedtoform+1cation Subshell to which electron is added to form -1 anion H 1s 1s Y □ □ Ga □ □ Ca □ □

How many valence electrons does lithium (Li) have available for bonding? A. 1 B. 2 C. 3 D. 4

Draw the Lewis structure for acetylene (C2H2). Be certain you include any lone pairs.

Write the name of each polyatomic ion: NO3-

Why is propylene glycol banned in Europe?

Explain how to calculate an Rf value and what that information can tell you about the success of your reaction. Was your guaifenesin synthesis successful?

"There are 6 strong acids you need to know. List their names and formulas below: Names of Acids: Acid 1 Acid 2 Acid 3 Acid 4 Acid 5 Acid 6 Formulas: Formula 1 Formula 2 Formula 3 Formula 4 Formula 5 Formula 6 Classify each of the following as a strong acid or a weak acid. Indicate how each should be written in aqueous solution. For example, should hydrochloric acid (HCl) be written as HCl or as H+ + Cl−? Phosphoric acid: In solution, this acid should be written as __________. Nitrous acid: In solution, this acid should be written as __________. Hydrofluoric acid: In solution, this acid should be written as __________."

Describe the difference between hypochlorous acid and hydrochloric acid.

How many valence electrons do barium and phosphorus have, respectively?

Show how lithium forms an ion. Does it form a cation or an anion?

The molar mass of carbon dioxide (CO2) is _____. A. 44.0 g/mol B. 47.0 g/mol C. 43.0 g/mol D. 42.5 g/mol

Is the baking of a cake a chemical change or a physical change? Justify your answer.

" Identify what reagents you would use to achieve each transformation: (a) Conversion of 2-methyl-2-butene into a secondary alkyl halide (b) Conversion of 2-methyl-2-butene into a tertiary alkyl halide (c) Conversion of cis-2-butene into a meso diol (d) Conversion of cis-2-butene into enantiomeric diols"

What happens to electrons in ionic bonds?

"Give the name or formula of the following ionic compound: Vanadium (V) phosphate"

What element is always present in an organic compound?

Which of the following is the Lewis structure for CO2? | **Variable** | **Univariate analysis** | | | **Multivariate analysis** | | | | | **HR** | **95% CI** | ***P* value** | **HR** | **95% CI** | ***P* value** | | --- | --- | --- | --- | --- | --- | --- | | Age (years) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Gender | 0.46 | 0.17–1.20 | 0.11 | 0.46 | 0.17–1.20 | 0.11 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | Tumor size (cm) | 0.99 | 0.98–1.01 | 0.30 | 0.99 | 0.98–1.01 | 0.30 | | **Variable** | **Univariate analysis** | | | **Multivariate analysis** | | | | | **HR** | **95% CI** | ***P* value** | **HR** | **95% CI** | ***P* value** | | --- | --- | --- | --- | --- | --- | --- | | Age (years) | 1.03 | 1.01–1.05 | 0.001 | 1.03 | 1.01–1.05 | 0.001 | | Gender | 1.00 | | | 1.00 | | | | Tumor size (cm) | 1.00 | | | 1.00 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | Tumor size (cm) | 1.01 | | | 1.01 | | | | **Variable** | **Mean** | **SD** | **Range** | | --- | --- | --- | --- | | Age | 27.9 | 5.0 | 17–48 | | Gender | 100% | 100% | 0–100% | | Education | 12.3 | 2.3 | 0–18 | | Education level | 12.3 | 2.3 | 0–18 | | Education level ^{ a } | 12.3 | 2.3 | 0–18 | | Education ^{ b } | 12.3 | 2.3 | 0–18 | | Education ^{ c } | 12.3 | 2.3 | 0–18 | | Education ^{ d } | 12.3 | 2.3 | 0–18 | | Education ^{ e } | 12.3 | 2.3 | 0–18 | | Education ^{ f } | 12.3 | 2.3 | 0–18 | | Education ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ h } | 12.3 | 2.3 | 0–18 | | Education ^{ i } | 12.3 | 2.3 | 0–18 | | Education ^{ j } | 12.3 | 2.3 | 0–18 | | Education ^{ k } | 12.3 | 2.3 | 0–18 | | Education ^{ l } | 12.3 | 2.3 | 0–18 | | Education ^{ m } | 12.3 | 2.3 | 0–18 | | Education ^{ n } | 12.3 | 2.3 | 0–18 | | Education ^{ o } | 12.3 | 2.3 | 0–18 | | Education ^{ p } | 12.3 | 2.3 | 0–18 | | Education ^{ q } | 12.3 | 2.3 | 0–18 | | Education ^{ r } | 12.3 | 2.3 | 0–18 | | Education ^{ s } | 12.3 | 2.3 | 0–18 | | Education ^{ t } | 12.3 | 2.3 | 0–18 | | Education ^{ u } | 12.3 | 2.3 | 0–18 | | Education ^{ v } | 12.3 | 2.3 | 0–18 | | Education ^{ w } | 12.3 | 2.3 | 0–18 | | Education ^{ x } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ a } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ b } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ c } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ d } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ c } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ d } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ b } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ c } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ d } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ e } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ f } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ h } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ c } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ d } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ e } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ f } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ h } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ h } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ y } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | Education ^{ z } ^{ , } ^{ g } | 12.3 | 2.3 | 0–18 | | **Variable** | **Univariate analysis** | | | **Multivariate analysis** | | | | | **HR** | **95% CI** | ***P* value** | **HR** | **95% CI** | ***P* value** | | --- | --- | --- | --- | --- | --- | --- | | Age | 1.01 | 0.99–1.03 | 0.06 | 1.01 | 0.99–1.03 | 0.06 | | Gender | 1.00 | 0.31–3.00 | 0.99 | 1.00 | 0.31–3.00 | 0.99 | | Tumor size | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade | 1.00 | 0.31–3.00 | 0.99 | 1.00 | 0.31–3.00 | 0.99 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 | | Tumor grade index | 1.00 | 0.99–1.01 | 0.06 | 1.00 | 0.99–1.01 | 0.06 |

"How do you calculate the ppm and molarity of a diluted standard solution of Fe²⁺ when starting with a stock solution that is 40 ppm in Fe²⁺? a) What is the formula to calculate ppm in a diluted standard solution? b) How can you determine the molarity of a solution from its ppm value?"

"The density of dichloromethane, an organic solvent, is 1.325 g/mL. If you mix 50 mL of water and 50 mL of dichloromethane together in a separatory funnel, which layer would be on top?"

Locate the element calcium (Ca) on the periodic table and read about its properties. Why might calcium be important in the diet of many living things?

Draw the Lewis structure for the trisulfur molecule. Be sure to include all resonance structures that satisfy the octet rule.