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Determine the electron geometry, molecular geometry, and polarity of N2O (N central).

"For the compounds C2H2 Cl2 and ClNO, complete the following tasks: Draw the Lewis structures, including formal charges and all resonance structures. Identify the electronic geometry. Identify the molecular geometry. Determine the bond angles. On your Lewis structure, indicate any polar covalent bonds and the overall molecular polarity. Demonstrate hybridization by drawing the appropriate structures."

Explain how to use the periodic table to deduce the number of protons, neutrons, and electrons of an atom of a specific element.

"For the compound BH3, show the following: (i) Lewis electron dot formula (ii) Lewis structure (draw in 3D - use wedge and dash for tetrahedral) (iii) Electronic geometry (name) (iv) Molecular geometry (name) (v) Bond angle (ideal) (vi) Polar or non-polar"

"What is the charge of the cation in MnCl3? Input your answer as a number (don't input the plus sign) Cation = ? Roman numeral = ?"

"Select the true statements about dopamine. Dopamine cannot cross the blood-brain barrier. L-dopa is converted to dopamine once inside the brain. Administration of dopamine can treat the symptoms of Parkinson's disea Dopamine deficiency causes Parkinson's disease. Dopamine is an ester."

"Which of the following molecules contains 1 sigma (σ) and 2 pi (π) bonds? A. Li2 B. B2 C. N2 D. O2 E. F2"

"Determine the electron-domain geometry of CCl 4 ​ . Identify the electron-domain geometry of PCl 3 ​ . A. Tetrahedral B. Trigonal pyramidal C. Trigonal planar D. Linear"

What is the Lewis dot structure for NOH3 ?

What is a three-letter word that starts with "gas"?

"Which is more highly regioselective, the reaction of an alkene with BH3 or with 9-BBN? A. The reaction of an alkene with BH3 B. The reaction of an alkene with 9-BBN"

"Fluorine has 7 valence electrons. Which charge is its ion likely to have? A. 1+ B. 5+ C. 1– D. 5–"

What is the pH level of hydrogen peroxide, a commonly used developer in hair coloring products?

"What is the bond order of C2−? Express the bond order numerically."

"One of the physical properties of bases is that they ____. A. taste sour B. feel slippery C. crumble D. corrode metal"

How many molecules are in 1.5 moles?

What is the charge of CO3?

"The shape of the carbon tetrachloride molecule (CCl4) is: A. tetrahedral B. bent C. pyramidal"

What is the electron configuration for neon?

What charge does nitrogen form when it becomes an ion?

"Write the correct Lewis dot structure for O2. Which statement correctly describes the structure of the whole molecule? A. There is a single bond, a double bond, and six lone pairs. B. There is a single bond and four lone pairs. C. There is a single bond and six lone pairs. D. There is a double bond and six lone pairs."

"The Lewis structure for carbon hydrogen cyanide (HCN) is given. What is the three-dimensional shape of the molecule? H-C≡N A. bent B. linear C. tetrahedral D. trigonal planar"

Calculate the molar mass (formula mass or molecular weight) of magnesium bromide.

"Which of the following statements could be true regarding polar molecules? Choose one or more: A. A polar molecule will not contain polar bonds. B. A polar molecule may have one or more lone pairs. C. A polar molecule has an uneven distribution of electron density. D. The bond dipoles in a polar molecule will cancel. E. A polar molecule will never contain nonpolar bonds."

"What are the angles between the bonds of the molecule Xenon difluoride (XeF2)?"

"The symbol P represents the element phosphorus. This element’s atomic number is 15. How many protons and electrons are in a P3− ion?"

"What is the charge of an aluminum ion? A. 2+ B. 3+ C. 2- D. 3-"

Which element has the following complete electron configuration: 1s22s22p63s23p64s23d5?

"For the molecule ethylene (C2 H4), draw the Lewis dot structure. What are the number of sigma (σ) and pi (π) bonds, respectively?"

"Give the molecular geometry and number of electron groups for XeF2. A. Seesaw, 5 electron groups B. T-shaped, 5 electron groups C. Linear, 5 electron groups D. Square planar, 6 electron groups E. Octahedral, 6 electron groups"

How many protons, neutrons, and electrons are there in a neutral atom of 30^P (phosphorus-30)?

Is bleach an acid or a base? Explain why.

What is the classification of Copper (Cu) as a metal, nonmetal, or metalloid? Metal Nonmetal Metalloid

"What is the molecular geometry of CO2? A. tetrahedral B. trigonal planar C. linear D. trigonal pyramidal E. bent"

Why does atomic radius increase as you go from the top to the bottom of a chemical family?

"Draw the Lewis structure of the HOBr molecule (O is central). a) How many shared pairs are in the molecule? b) How many electron groups are around the central atom? c) What is the predicted bond angle in the molecule? d) What is the shape of this molecule?"

"How many valence electrons should you use to draw a Lewis structure of carbon dioxide (CO2 )?"

"Molarity (M) is measured in what units? i. L/mol ii. g/L iii. mol/mL iiii. mol/L"

"Which formula can be used to calculate the theoretical yield? A. Actual yield + percent yield B. Amount of reactants + amount of products C. (Actual yield ÷ percent yield) × 100 D. (Amount of reactant ÷ amount of product) × 100"

How many protons, neutrons, and electrons does boron have?