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3 years ago

____________________ energy is the energy of movement.

Chemistry

1 answer:

neonofarm [45]3 years ago

7 0

Thermal energy is the energy of movement.

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The radius of a vanadium atom is 130 pm. How many vanadium atoms would have to be laid side by side to span a distance of 1.30 m

monitta

Answer:

5 000 000 (5 million atoms)

Explanation:

Let us assume that a vanadium atom has a spherical shape.

diameter of a sphere = 2 x radius of the sphere

Thus,

Radius of a vanadium atom = 130 pm

= 130 x $10^{-12}$ m

The diameter of a vanadium atom = 2 x radius

= 2 x 130 x $10^{-12}$

= 260 x $10^{-12}$ m

Given a distance of 1.30 mm = 1.30 x $10^{-3}$ m,

The number of vanadium atoms required to span the distance = $\frac{1.3*10^{-3} }{260*10^{-12} }$

= 5000000

Therefore, the number of vanadium atom that would span a distance of 1.30 mm is 5 million.

3 0

3 years ago

What coefficient must be added to the carbon in the reactants to balance the following equation?

Sophie [7]

Answer:

Explanation:

There are 3 carbons on the right side

there are only two on the left side....you need one more ...so add one more... change the '1' coefficient in front of C to '2'

7 0

2 years ago

These are large chemical compounds, primarily consisting of carbon and hydrogen, that exist in living organisms.

TEA [102]

It is called a Biomolecule

4 0

3 years ago

Read 2 more answers

How many molecules are in 4.0 mol h20

Leona [35]

4 moles of water will have 4 number of water molecules

7 0

2 years ago

A gas mixture consists of 60.0% Ar, 30.0% Ne, and 10.0% Kr by volume. If the pressure of this gas mixture is 80.0 kPa, what is t

Nat2105 [25]

Answer: The partial pressure of Argon , Neon and krypton are 48 kPa , 24 kPa and 8 kPa respectively.

Explanation:

According to Raoult's Law , the partial pressure of each component in the solution is equal to the total pressure multiplied by its mole fraction. It is mathematically expressed as

$p_A=x_A\times P_{total}$

where, $p_A$ = partial pressure of component A

$x_A$ = mole fraction of A

$P_{total}$ = total pressure

mole fraction of Ar = $\frac{\text {Moles of Ar}}{\text {total moles}}=\frac{60.0}{60.0+30.0+10.0}=0.6$

$p_{Ar}=0.60\times 80.0kPa=48kPa$

mole fraction of Ne = $\frac{\text {Moles of Ne}}{\text {total moles}}=\frac{30.0}{60.0+30.0+10.0}=0.30$

$p_{Ne}=0.30\times 80.0kPa=24kPa$

mole fraction of Kr = $\frac{\text {Moles of Kr}}{\text {total moles}}=\frac{10.0}{60.0+30.0+10.0}=0.10$

$p_{Kr}=0.10\times 80.0kPa=8kPa$

4 0

3 years ago