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2 years ago

Which statement about gases is true?

Chemistry

1 answer:

Marat540 [252]2 years ago

6 0

Answer:

B) They are made up of particles that travel in a curved path when in motion.

Explanation:

We know that gas, being a state of matter, is made up of particles. John Dalton's solid-sphere model was proven to be incorrect by Ernest Rutherford's gold foil experiment.

These particles do NOT always move very slowly. There are multiple different factors that affect the speed of the particles such as temperature or concentration.

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The primary food source for many sea animals is:

borishaifa [10]

Answer:

plankton

Explanation:

like in spongebob lol but for real I'm a marine biologist I know this is the answer lol

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3 years ago

What is the process of using one or more of your five senses to measure or collect data?

sveta [45]

Answer:

B no observation pls mark me branilest

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3 years ago

Read 2 more answers

Consider the reaction 2 CO + O2 → 2 CO2 .What is the percent yield of carbon dioxide

Wewaii [24]

Answer:

$Y=50.9\%$

Explanation:

Hello,

In this case, given the reaction, we can directly compute the theoretically yielded grams of carbon dioxide, considering the 2:2 molar ratio between carbon monoxide (molar mass = 28 g/mol) and carbon dioxide (molar mass = 44 g/mol) and the initial reacting grams of carbon monoxide in excess oxygen:

$m_{CO_2}^{theoretical}=10gCO*\frac{1molCO}{28gCO}*\frac{2molCO_2}{2molCO}*\frac{44gCO_2}{1molCO_2} =15.7gCO_2$

Thus, as only 8 g were actually yielded, we compute the percent yield:

$Y=\frac{8g}{15.7g}*100\% \\\\Y=50.9\%$

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7 0

3 years ago

Name the only satellite which is known to have an atmosphere in the planet it orbits

Maurinko [17]

Answer:

Titan which orbits Saturn

Explanation:

6 0

3 years ago

If 20 grams of zinc reacts with hydrochloric acid, how much zinc chloride is produced?

Oksi-84 [34.3K]

Assuming there is excess acid, the equation for the reaction is Zn + 2HCl -> ZnCl2 + H2.
Mols of zinc = 20/65 (mass/relative atomic mass)
Ratio of Zn : ZnCl2 = 1 : 1
Hence mols of Zinc = mols of Zinc chloride
Mass of ZnCl2 = (20/65)(65+71)
= 41.8g

3 0

4 years ago