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Zielflug [23.3K]
2 years ago
6

1. How much taller is the average person today than the average person 100 years ago?

Chemistry
1 answer:
andreev551 [17]2 years ago
4 0
5 inches I am not sure but I THINK it’s 5 inches sry if I’m wrong
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How many covalent bonds are there in one molecule of carbon dioxide, CO2?
Nutka1998 [239]
It would be two because there’s 1 Carbon and 2 oxygen

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2 years ago
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NiSe2 + Ca3(PO4)2 = Ni3(PO4)2 + CaSe<br><br> balance please
Aliun [14]
3Ni + Sn3(PO4)2 → Ni3(PO4)2 + 3Sn I think. Not for sure though
8 0
2 years ago
Im hvaing a hard time getting the right answer
Tanya [424]

Answer:

V=23.9mL

Explanation:

Hello!

In this case for the solution you are given, we first use the mass to compute the moles of CuNO3:

n=2.49g*\frac{1mol}{125.55 g}=0.0198mol

Next, knowing that the molarity has units of moles over liters, we can solve for volume as follows:

M=\frac{n}{V}\\\\V=\frac{n}{M}

By plugging in the moles and molarity, we obtain:

V=\frac{0.0198mol}{0.830mol/L}=0.0239L

Which in mL is:

V=0.0239L*\frac{1000mL}{1L}\\\\V=23.9mL

Best regards!

6 0
2 years ago
If a mixture looks smooth and the same throughout it is probably what
gulaghasi [49]
Answer:
             <span>If a mixture looks smooth and the same throughout it is probably <u>Homogeneous</u>.

Explanation:
                   Mixture is the combination of different compounds which are unreactive to each other.

Mixture are classified as ...

Solutions; in which the mixed compounds are thoroughly mixed and cannot be distinguished from each other and are said to be homogeneous. In solutions the size of solute is very small (i.e. Less than 1 nm).

Colloids; in which the solute is homogeneous visually but heterogeneous microscopically. The size of particles in this case is between 1 nm to 1 </span>μm.

Suspensions; in which the mixture is heterogeneous, the particle size is greater than 1 μm and settles down (precipitation) under the influence of gravity.
4 0
3 years ago
Explain why the air inside of the balloon has more pressure than the air outside.
julia-pushkina [17]

Answer:

its more condensed

Explanation:

6 0
3 years ago
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