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alex41 [277]
3 years ago
6

Define stoichiometry and explain why it is such a useful tool for chemists

Chemistry
1 answer:
Lelu [443]3 years ago
6 0
Define stoichiometry and explain why it is such a useful tool for chemists. ...Explain<span> what a limiting reactant is and why it is important in </span>stoichiometry<span>. A limiting reactant is the reactant in a chemical equation that runs out first. It is important because its quantity determines the amount of products produce</span>
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How many liters of oxygen gas, at standard temperature and pressure, will react with 25.0 grams of magnesium metal? Show all of
love history [14]
Given:
2 Mg + O2 → 2 MgO 
So,
<span>(25.0 g of Mg / 24.3051 g/mole) x (1/2) x (22.4 L/mole) = 11.5 L  of Oxygen will react with 25 grams of magnesium metal.</span>
8 0
3 years ago
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True or False: A property is a way to
kenny6666 [7]

Answer:

True

Explanation:

Here is an example: chemical properties include flammability, toxicity, acidity, reactivity. we observe the changes of these properties. Therefore, It's true.

5 0
2 years ago
How the water cycle functions because of change in matter.
kap26 [50]
Well, the only way you would get clouds is evaporation, a liquid to a gas. (Change of matter) the clouds would not turn into rain without percipitation, gas to water. (Change of matter.)
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3 years ago
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What is the mass number of an ion with 107 electrons, 158 neutrons, and a 1 charge?
vredina [299]
No of protons=107+1=108
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6 0
3 years ago
A precipitation reaction is caused by mixing 100. mL of 0.25 M K2Cr2O7 solution with 100. mL of 0.25 M Pb(NO3)2 solution. When t
Sergeeva-Olga [200]

Answer:

Neither is affected

Explanation:

The reaction occurs as follows:

K₂Cr₂O₇ + Pb(NO₃)₂ → PbCr₂O₇ + 2K⁺ + 2NO₃⁻

That means per mole of reaction you will have two moles of both K⁺ and NO₃⁻.

But volume is also doubled, doing that concentration of spectator ions doesn't change.

Right answer: Neither is affected

I hope it helps!

8 0
2 years ago
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