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Nickolas Blankenship
ChemistryChemistry
What is the mole ratio of butane to carbon
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Payten Drake
ChemistryChemistry
The numbers represent the change in energy for a chemical reaction. Which numbers would result from an endothermic reaction? Check all that apply.

456

0

-589

800

1

-212
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Sawyer
ChemistryChemistry
If two identical atoms are bonded together, what kind of molecule is formed?

A. A bent, nonpolar molecule

B. A linear, polar molecule

C. A linear, nonpolar molecule

D. A linear, ionic molecule
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Ronan Farrell
ChemistryChemistry
What sort of nucleophile does NADH supply?
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Larry Hansen
ChemistryChemistry
Ammonia is a weak base. if the initial concentration of ammonia is 0.150 m and the equilibrium concentration of hydroxide is 0.0016m, calculate kb for ammonia.
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Jaylee
ChemistryChemistry
Convert 1.140atm to kPs
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Cash Powers
ChemistryChemistry
Draw the condensed structural formula for the ammonium salt formed when lidocaine reacts with hcl.
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Kaydence Combs
ChemistryChemistry
The half-life of a certain element is 100 days. How many half-lives will it be before only one-eighth of this element remains?
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Anthony Evans
ChemistryChemistry
If the reactants of a reaction are HCI and NaOH, what could be a product? A. NO2, B. HCIO4, C. NaCl, D. Na2CO3
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Zachary Young
ChemistryChemistry
Why is scientific notation useful?
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Peter Bright
ChemistryChemistry
Hydrochloric acid, HCl, reacts with solid NaOH. What are the products of this chemical reaction?
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Yosef Mclaughlin
ChemistryChemistry
Why are emission spectra referred to as the fingerprints of the elements?
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Keon Avery
ChemistryChemistry
David has a weather balloon that he fills with helium and then releases. As the balloon rises into the atmosphere, the balloon gets bigger and bigger. Why?

A) the temperature of the gas is decreasing, so the volume is increasing

B) the volume is increasing as the pressure inside is decreasing to match the air pressure outside the balloon

C) gas is leaking out of the balloon, so there isn't as much volume

D) this doesn't happen - - the balloon will actually stay the same size
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Guest
ChemistryChemistry
Beaux has purchased a synthetic material for a product he is launching. What is most likely a benefit of this material? A) It is biodegradable. B) It can be recycled cheaply. C) It is heavy. D) It can be mass produced.
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Kaydence Warner
ChemistryChemistry
Which equation represents a neutralization reaction?

A) 6HC1O - > 4HCL + 2HCLO3

B) CH4 + 2O2->CO2+2H20

C) Ca (OH) 2+H2SO4->CaSO4+2H2O

D) Ba (OH) 2+Cu (NO3) 2->Ba (NO3) 2+Cu (OH) 2
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