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Zielflug [23.3K]
3 years ago
10

Which element is a nonmetal?

Chemistry
2 answers:
defon3 years ago
8 0

oxygen is the correct answer:) hope this helps
babunello [35]3 years ago
6 0

Answer:oxygen

Explanation:

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Which is a poor conductor of heat <br> a. aluminum<br> b. iron<br> c. ceramic<br> d. zinc
jasenka [17]

Answer:

c. ceramic

Explanation:

because b d and a are metals c is not

3 0
2 years ago
Read 2 more answers
How many milliliters of water are needed to prepare a 3.5M solution of NaOH if you have .5mol of the solute
Mamont248 [21]

Answer:

1335.12 mL of H2O

Explanation:

To calculate the mililiters of water that the solution needs, it is necessary to know that the volume of the solution is equal to the volume of the solute (NaOH) plus the volume of the solvent (H2O).

From the molarity formula we can first calculate the volume of the solution:

M=\frac{solute moles}{solution volume}

Solutionvolume=\frac{solute moles}{M} =\frac{5mol}{3.5\frac{mol}{L} } =1.429L

The volume of the solution as we said previously is:

Solution volume = solute volume + solvent volume

To determine the volume of the solute we first obtain the grams of NaOH through the molecular weight formula:

MW=\frac{mass}{mol}

Mass=MW*mol=39.997\frac{g}{mol} *5mol=199.985g

Now with the density of NaOH the milliliters of solute can be determined:

d=\frac{mass}{volume}

Volume=\frac{mass}{d} =\frac{199.985g}{2.13\frac{g}{mL} } =93.88mL of NaOH

Having the volume of the solution and the volume of the solute, the volume of the solvent H2O can be calculated:

Solvent volume = solution volume - solute volume

Solvent volume = 1429 mL -  93.88 mL = 1335.12 mL of H2O

7 0
3 years ago
How many molecules are there in 4.00 moles of sulfur dioxide?
FinnZ [79.3K]

Explanation:

4 x 6.02 x 10²³ = 2.41 x 10²⁴

5 0
3 years ago
Who is allowed to go into a crime scene after its released?
Gala2k [10]

Answer:

detectives, police officers and occasionaly lawyers/attorneys.

Explanation:

Non essential officers, judges, district attorney investigators, federal agents, victums, witnesses and politics are not permited to enter crime scenes unless they can provide information and history about the event.

6 0
3 years ago
Why is the water cycle called a cycle and not a system?
alexira [117]
It is called a cycle because it is repetitive, therefore making it a cycle (or almost never ending)
5 0
3 years ago
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