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SOVA2 [1]
3 years ago
12

All airplanes have mass; therefore, what force pulls them toward the ground?

Chemistry
1 answer:
Marina86 [1]3 years ago
7 0

Answer:

B. Gravity

Explanation:

Gravity pulls stuff down

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A 6.175 gram sample of an organic compound containing only C, H, and O is analyzed by combustion analysis and 13.30 g CO2 and 5.
Bingel [31]

Answer:

Empirical and molecular formulas are the same, C₅H₁₀O₂.

Explanation:

Hello!

In this case, when determining the empirical and molecular formulas of organic compounds via combustion analysis, we first need to compute the moles of carbon and hydrogen via the yielded mass of carbon dioxide and water:

n_C=13.30gCO_2*\frac{1molCO_2}{44.01gCO_2}*\frac{1molC}{1molCO_2}=0.30molC\\\\n_H=5.447gH_2O*\frac{1molH_2O}{18.02gH_2O}*\frac{2molH}{1molH_2O}=0.60molH

Next, we need to compute the mass of oxygen by subtracting the mass of carbon and hydrogen to the mass of the sample of the compound:

m_O =6.175g-0.3molC*12.01gC/molC-0.6molH*1.01gH/molH =1.966gO

And consequently the moles:

n_O=0.12molO

Now, we need to divide the moles of each atom by the fewest moles, it in this case, those of oxygen to obtain the subscripts in the empirical formula:

C=\frac{0.30}{0.12} =2.5\\\\H=\frac{0.60}{0.12} =5\\\\O=\frac{0.12}{0.12} =1

Thus, the empirical formula, taken the nearest whole number is:

C_5H_{10}O_2

Now, if we divide the molar mass of the molecular formula (102.1 g/mol) by that of the empirical formula (102.1 g/mol) we infer they are both the same.

Best regards!

6 0
2 years ago
C3H18 +<br> O2<br> +<br> CO2 + H2O<br> Balance equation
dimulka [17.4K]

Answer:

2C3H18 + 15O2 ---->6CO2 +18H2O

Explanation:

the number of reactant must be equal to the number of product.

7 0
3 years ago
What temperature creates hail
oksano4ka [1.4K]

Answer:

32 °F

Formation. Hail forms in strong thunderstorm clouds, particularly those with intense updrafts, high liquid water content, great vertical extent, large water droplets, and where a good portion of the cloud layer is below freezing 0 °C (32 °F).

Explanation:

brainlist me and that's all I know and we have the same module I guess

4 0
2 years ago
Describe the motions of particles in the 3 common states of matter
kodGreya [7K]
3 Common States of Matter:

1. Solid - particles are motionless and stick together very closely.

2. Liquid - particles are moving slowly without pattern.

3. Gas - Particles are moving rapidly again without pattern.
3 0
3 years ago
Question 3 of 10
KATRIN_1 [288]

Answer:A

Explanation:

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2 years ago
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