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3 years ago

A chemist isolates a substance, made of two nonmetals, that is a gas at room temperature. The substance most likely is _____.

Chemistry

2 answers:

Andru [333]3 years ago

5 0

It would most likely be a molecular compound. A molecular compound contains two or more nonmetals.

erastovalidia [21]3 years ago

5 0

Answer: The substance formed will be a covalent compound.

Explanation:

A covalent compound is defined as the compound which is formed from the sharing of electrons between the element that are combining together.

These compounds are most likely to be formed when two non-metals combine together. For Examples: HCl, $SO_2$ etc.. are covalent compounds.

Hence, the substance formed will be a covalent compound.

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4 NH3(g) + 5O2(g) → 4NO(g) + 6H2O(g)

Mariulka [41]

Answer:

0.9 moles of water

Explanation:

Use mole ratios:

5 : 6

divide by 5 on both sides

1 : 1.2

multiply by 0.75 on both sides

0.75 : 0.9

So the result is 0.9 moles of water

(Please correct me if I'm wrong)

5 0

3 years ago

Consider only the experiment you conducted with 0.5 g. of lactose.

rjkz [21]

Answer is: the pH value(level) is the independent variable.

Missing question: We conducted an experiment where we added 0.5 g of lactose to 5 different test tubes all containing 5 different pH levels. What is the independent variable?
In this experiment pH level changes, so results depend on different pH values.
Mass of lactose is same during experiment,so the number of molecules of product formed per minute is the dependent variable.

8 0

4 years ago

A vessel contains a mixture of gases. The mass of each gas used to make the mixture is known. Which of the following information

faltersainse [42]

Answer: The molar mass of each gas

Explanation:

Mole fraction is the ratio of moles of that component to the total moles of solution. Moles of solute is the ratio of given mass to the molar mass.

$\text{Mole fraction of solute}=\frac{\text{Moles of solute}}{\text{Total Moles}}$

Suppose if there are three gases A, B and C.

a) $\text{Mole fraction of A}=\frac{\text{Moles of A}}{\text{ Moles of (A+B+C)}}$

b) $\text{Mole fraction of B}=\frac{\text{Moles of B}}{\text{ Moles of (A+B+C)}}$

c) $\text{Mole fraction of C}=\frac{\text{Moles of C}}{\text{ Moles of (A+B+C)}}$

moles of solute = $\frac{\text {given mass}}{\text {Molar mass}}$

Thus if mass of each gas is known , we must know the molar mass of each gas to know the moles of each gas.

8 0

3 years ago

Jamie had $37 in his bank account on Sunday.

Alexandra [31]

Answer:

where's the question... ?

4 0

3 years ago

The figure represents a solid block of copper metal in a beaker at 30°C Which of the following best represents the particle arra

maria [59]

Answer:

Explanation:

i think it is 30

6 0

3 years ago