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Nimfa-mama [501]
3 years ago
7

5. Which elements are examples of nonmetals?

Chemistry
1 answer:
kykrilka [37]3 years ago
5 0

Answer:

B

Explanation:

ifhwndidbsnsdijwjsidbebejdidid

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How much work (in J) is involved in a chemical reaction if the volume decreases from 4.35 to 1.20 L against a constant pressure
Marianna [84]

Answer:

W = -262 J.

Explanation:

Hello there!

In this case, according to the given information, we can recall the definition of work in terms of constant pressure and variable volume as follows:

W=P(V_2-V_1)

So we plug in the given pressure and volumes to obtain:

W=0.822atm(1.20L-4.35L)\\\\W=-2.60atm*L

Now, we convert this number to J (Pa*m³) by using the shown below conversion factor:

W=-2.60atm*L*\frac{101325Pa}{1atm} *\frac{1m^3}{1000L}\\\\W=-262J

Regards!

3 0
3 years ago
What is the name of the compound N2(g)
zavuch27 [327]
N2 stands for nitrogen.
                             this compound also includes the exact mass.
If you have any other questions please contact me here on Brainly.com and i will be happy to help.
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                 -Diane
7 0
3 years ago
Yvette mixed together water with calcium chloride in a beaker. She noticed that the temperature changed from 21oC to 37oC. She a
Rufina [12.5K]

Answer:

The temperature changed

5 0
3 years ago
What is the molarity of a NaOH solution if 32.47 mL is required to titrate 0.6013 g of potassium hydrogen phthalate (C8H5O4K)
Artist 52 [7]

Answer:

0.0907 M

Explanation:

Before you can calculate the molarity, you need to convert grams to moles (via molar mass) and convert mL to L.

(Step 1)

Molar Mass (C₈H₅O₄K):

8(12.011 g/mol) + 5(1.008 g/mol) + 4(15.998 g/mol) + 39.098 g/mol

Molar Mass (C₈H₅O₄K): 204.218 g/mol

0.6013 g C₈H₅O₄K             1 mole
------------------------------  x  ------------------  =  0.00294 moles C₈H₅O₄K
                                          204.218 g

(Step 2)

1,000 mL = 1 L

32.47 mL              1 L
---------------  x  -----------------  =  0.03247 L
                        1,000 mL

(Step 3)

Molarity (M) = moles / volume (L)

Molarity = 0.00294 moles / 0.03247 L

Molarity = 0.0907 M

6 0
2 years ago
Which material is the most dense?
finlep [7]
Osmium is the most densest substance 
4 0
4 years ago
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