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4 years ago

14

A moving object collides with a stationary object. Which of the following statements is true according to Newton’s third law of

motion?

1 answer:

andriy [413]4 years ago

4 0

Answer:

the object it bumped into will have the same volocity as the moving object the collided with it

Explanation:

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A gaseous hydrogen and carbon containing compound is decomposed and formed to contain 82.66% carbon and 17.34% hydrogen by mass.

Romashka [77]

Explanation:

Mole percentage of carbon = $\frac{percentage given}{molar mass of carbon}$

= $\frac{82.66}{12}$

= 6.89

Mole percentage of hydrogen = $\frac{percentage given}{molar mass of hydrogen}$

= $\frac{17.34}{1}$

= 17.34

Now, dividing mole percentage of both the atoms by 6.89.

Then, C = 1 and H = $\frac{17.34}{6.89}$ = 2.5

Hence, empirical formula is $C_{2}H_{5}$ .

As, it is given that P = 556 mm Hg. Convert mm Hg into atm as follows.

$\frac{556 mm Hg \times atm}{760 mm Hg}$

= 0.7316 atm

Volume is given as 158 mL. So, in liter volume is $\frac{158}{1000}$ equals 0.158 L.

According to ideal gas equation, PV = nRT

$0.7316 atm \times 0.158 L = \frac{mass}{molar mass} \times 0.082 atm L/mol K \times 298 K$

$0.7316 atm \times 0.158 L = \frac{0.275 g}{molar mass} \times 0.082 atm L/mol K \times 298 K$

molar mass = 58.2 g

Hence, molecular weight of $C_{2}H_{5}$ is $12 \times 2 + 5$ = 29.

Therefore, $(C_{2}H_{5})_{n}$ = 58

29 × n = 58

n = 2

Thus, molecular formula of the compound is $C_{4}H_{10}$ .

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4 years ago

NEED HELP PLSS:(

stira [4]

Answer:

A: 92.02 g

Explanation:

Equation of the reaction;

N2 (g)+ 2O2(g)------> 2NO2(g)

Note that the balanced reaction equation is the first step in solving any problem on stoichiometry. Once the reaction equation is correct, the question can be easily solved...

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2 years ago

Name the five practices that are part of the scientific inquiry process.

soldi70 [24.7K]

Sorry if I'm wrong but it's 1) learner engages in scientifically oriented questions. 2) learner gives priority to evidence in responding to questions. 3) learners formulate explanations from evidence. 4) learner connects explanations to scientific knowledge. 5) learner communicates explanations.

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3 years ago

Can someone help me and fast

jasenka [17]

Answer:

It is likely B.

Explanation:

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3 years ago

Helpppppp please please

polet [3.4K]

What do we do? hehehehe

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3 years ago