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adelina 88 [10]
3 years ago
10

Please help me with these 3 questions with will be giving out brainiest

Chemistry
1 answer:
Anna71 [15]3 years ago
5 0

Answer: All of them are true

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28. The formula for magnesium nitride is____.<br> a. MgN<br> b. MgN3<br> c. Mg3N2<br> d. Mg2N3
oksian1 [2.3K]

Answer:

C

Explanation:

As long as those numbers are subscripts then that's right

8 0
3 years ago
Read 2 more answers
5. What is the volume of 10 moles of a gas at 300 K held at a pressure of 3.5 atm?
Helga [31]

70.33 L  is the volume of 10 moles of a gas at 300 K held at a pressure of 3.5 atm.

<h3>What is volume?</h3>

Volume is the percentage of a liquid, solid, or gas's three-dimensional space that it occupies.

Liters, cubic metres, gallons, millilitres, teaspoons, and ounces are some of the more popular units used to express volume, though there are many others.

We will use ideal gas law to find the volume

PV = nRT

Can also be written as

V = (nRT)/P

Where,

P = pressure

V = volume

n = amount of substance

R = ideal gas constant

T = temperature

Here, we have given

P = 3.5 atm

V = to find

n = 10 moles

R = 0.08206 L⋅atm/K⋅mol

T = 300k

Lets substitute the values

V = (10 × 0.08206 × 300)/3.5

V =  70.33 L

Learn more about volume

brainly.com/question/463363

#SPJ10

3 0
1 year ago
if a solution measured with the miscalibrated meter (above) gave a reading of 6.50 at 20oC, what should be the true pH (give 2 d
Andreas93 [3]

Answer:

Explanation:

Ph is the major of acidity or basicity of a solution. On a scale of 0 to 14

PH = -log 10 ^(H+)

Therefore PH= -log 10^(6.5) =0.81

Therefore PH of the solution is 0.81

This solution is therefore an acidic solution

7 0
4 years ago
Which of the following would make a solution?
gizmo_the_mogwai [7]

Answer:

B sugar in water

Explanation:

because sugar dissolves in water while the others don't

8 0
3 years ago
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Abiotic factors are no living part of an environment. True or False​
oksian1 [2.3K]

Answer:

true

Explanation:

abiotic means nonliving and biotic means living

6 0
3 years ago
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