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6 0

The answer is D. heterogeneous mixture. A heterogeneous mixture is a mixture composed of components that aren't uniform across the mixture.

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A sample of a compound that contains only the elements C, H, and N is completely burned in O₂ to produce 44.0 g of CO₂, 45.0 g o

koban [17]

Answer:

CH₅N

Explanation:

In the combustion, all of the C in the compound was used to produce CO₂ in a 1:1 ratio. Thus, the moles of CO₂ (MW 44.01 g/mol) produced equals the moles of C in the compound:

(44.0 g)(mol/44.01g) = 0.99977 mol CO₂ = 0.99977... mol C

Similarly, all of the H in the compound was used to produce H₂O in a ratio of 2H:1H₂O. The moles of H₂O (MW 18.02 g/mol) produced was:

(45.0 g)(mol/18.02g) = 2.497...mol H₂O

Moles of H is found using the molar ratio of 2H:1H₂O:

(2.497...mol H₂O)(2H/1H₂O) = 4.994...mol H

The ratio of H to C in the compound is:

(4.994...mol H)/(0.99977... mol C) = 5 H:C

Some NO₂ was produced from the N in the compound. Assuming a 1:1 ratio of C:N, the simplest empirical formula is: CH₅N.

3 0

3 years ago

When a person says "I think that between an elephant and a monkey that jumped off the cliff, both of them will hit the ground at

Fofino [41]

Option A is correct. When a person says "I think that between an elephant and a monkey that jumped off the cliff, both of them will hit the ground at the same time." the person is stating his Hypothesis

A hypothesis is an explanation proposed or given based on a piece of evidence that is limited.

It is useful at the beginning of an investigation because it serves as the building block for an impending fact or law.

From the statement, we can see that the person is not too sure of the information provided since he "thinks". He said, "I think that between an elephant and a monkey that jumped off the cliff, both of them will hit the ground at the same time."

Hence we can conclude that the person is stating a hypothesis.

Law and theory are incorrect because they are already proven facts.

Learn more here: brainly.com/question/6907236

6 0

3 years ago

Read 2 more answers

Which is an example of flow of heat through conduction

JulsSmile [24]

Answer:

a metal spoon left in boiling water

Explanation:

5 0