Chemistry » Page 83

Chemistry

Brendon Soto

Calculate the pH of a solution of 0.25M H2SO4

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Chemistry

Walter Salazar

His transmitter is mostly located in diffuse neuronal systems in the CNS, with cell bodies particularly in the raphe nuclei. It appears to play a major role in the expression of mood states, and many antidepressant drugs are thought to increase its functional activity.

a) Acetylcholine

b) acctone

c) acid

d) base

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Chemistry

Donna Ross

Mechanism with a small activation energy or one with large activation energy

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Chemistry

Grayson

Ammonium phosphate nh43po4 is an important ingredient in many fertilizers. it can be made by reacting phosphoric acid h3po4 with ammonia nh3. what mass of phosphoric acid is consumed by the reaction of 8.4g of ammonia?

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Chemistry

Eloise

True or false the first species to colonize newly exposed land are called primary species?

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Chemistry

Alivia Phelps

How does the gas propellant move when an aerosol can is used?

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Chemistry

Reina Carr

When heated, KClO3 decomposes into KCl and O2. If this reaction produced 88.4 g of KCl, how much O2 was produced (in grams) ? 2KClO_3--->2KCl+3O_2. A) 2 (KClO_3) = 245.096 B) 2KCl=149.102g C) 3O_2=95.995

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Chemistry

Nikki

What has more thermal energy, 200 g of water at 40 degrees Celsius or 1000 g of water at 30 degrees Celsius

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Chemistry

Madelyn Henson

If the density of a certain spherical atomic nucleus is 1.0x10^14 g cm^-3 and its mass is 2.0x10^-23 g, what is it radius in cm?

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Chemistry

Laylah Acevedo

How many protons, neutrons and electrons are in an atom of magnesium-24?

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Chemistry

Barajas

If there is losts of pollution, what happens?

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Chemistry

Samara

How does the structure of the pencil relate to its function?

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Chemistry

Danielle Barton

What Element is named for a country in western europe

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Chemistry

Amiah Bailey

What is formed when amino acids form long chains?

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Chemistry

Guest

Imagine a chemist is in the lab and trying to make some chemical reactions happen. In one reaction she reacts chemicals in an exothermic reaction and there is an increase in entropy. A second chemical reaction she is trying to run is endothermic and there is a decrease in entropy. Which of the two reactions is more likely to occur and why?

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