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seropon [69]
3 years ago
6

If an effusion experiment, it required 45 seconds for

Chemistry
1 answer:
patriot [66]3 years ago
8 0

Answer: A  vacuum. Under the same conditions 16 s were required for the same number of moles of O2 to effuse. ... The molar mass of the unknown gas is 200 g/mol. calculation ... QUESTION 1 If gas-burning appliances are vented into an unlined masonry chimney, deteriorate and crumble and may · PLS HELP

Explanation:

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A student is given two 10g samples, each a mixture of only NaCl(s) and KCl(s) but in different proportions. Which of the followi
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Answer:

The information that can be used to determine which mixture has the higher proportion of KCl IS INFORMATION ABOUT THE MASS OF CHLORINE IN EACH MIXTURE, THIS INFORMATION CAN BE OBTAINED BY USING THE LAW OF DEFINITE PROPORTION.

Explanation:

The law of definite proportion states that the chemical composition by mass of a chemical compound is always constant. For instance, a chemical compound that is made up of two elements will always contain the same proportions of the constituent elements regardless of the quantity of chemical that was used.

Using the law of definite proportion, we can determine the proportion of sodium and chlorine in NaCl and the proportion of potassium and chlorine in KCl if the mass of chlorine that was used is known. Based on the results obtained, one can easily determine the mixtures that has higher proportion of KCl.

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3 years ago
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______Is analyzed by qualitative methods
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A. The identify of the poison used in a murder.

Explanation:

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3 years ago
A copper wire is made of copper (Cu) atoms. Which of the following best describes the copper atoms?
Evgesh-ka [11]

Answer: Option (A) is the correct answer.

Explanation:

An element is defined as a substance that contains atoms of same type.

As copper wire is a substance that is made up of only atoms of copper. And, all these atoms of copper will be the same. Hence, it is an element.

This means that all the atoms of copper will have same number of protons, neutrons and electrons.

Thus, we can conclude that the statement they are all exactly the same best describes the copper atoms.

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What steps are involved in the process that turns sediment back to rock? Select all that apply.
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Answer:

compaction and cementation

I love science by the way

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In the induced fit model of enzymes, a substrate associates itself with which part of an enzyme?
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Hello.

Active site of the enzyme.

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