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Kipish [7]
2 years ago
7

Temperature, according to the kinetic molecular theory, is a measure of intermolecular attraction.

Chemistry
1 answer:
Neko [114]2 years ago
4 0
False the other guy is wrong
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Which of the following is a weak base ?
Scrat [10]
<span>NH3 is the answer, if u look up its ph its a weak base</span>
7 0
3 years ago
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236U &gt;33 Np+ ____? <br> 92<br> help plzzzzz
anygoal [31]

Answer:

1

Explanation:

if 33 the answer would be 92 but u think then 92 32 1

5 0
3 years ago
Which profile best describes the reaction C(s) + 2H2(g) → CH4(g),<br> AH = -74.9 kJ?
katrin [286]

Answer:

Option B. A

Explanation:

From the question given above, the following data were obtained:

C(s) + 2H₂ (g) —> CH₄ (g). ΔH = –74.9 kJ

From the reaction above, we can see that the enthalpy change (ΔH) is negative (i.e –74.9 KJ) which implies that the heat content of the reactants is greater than the heat content of the products. Thus, the reaction is exothermic reaction.

For an exothermic reaction, the energy profile diagram is drawn in such a way that the heat content of reactants is higher than the heat content of products because the enthalpy change

(ΔH) is always negative.

Thus, diagram A (i.e option B) gives the correct answer to the question.

8 0
2 years ago
Read 2 more answers
A student plans to use a density versus solution concentration standard curve to identify the sodium chloride concentration in a
Art [367]

Answer:

a. 0.50 g, 1.0 g, 1.5 g, 2.0 g, 2.5 g;

g. 0.1 g, 0.5 g, 1.0 g, 1.5 g, 2.0 g

Explanation:

The percent mass is defined as a ratio between the mass of a solute and mass of a solution:

\omega = \frac{m_{solute}}{m_{solution}}\cdot 100\%

Since solution only consists of a solute and solvent, express its mass as:

m_{solution} = m_{solute} + m_{solvent}

Then:

\omega = \frac{m_{solute}}{m_{solution}}\cdot 100\%=\frac{m_{solute}}{m_{solute} + m_{solvent}}

Firstly, solve for how much mass is required to prepare 3.0 %. Let's say, we have x g of the solute:

0.03 = \frac{x}{30.0 + x}\therefore x = 0.03(30.0 + x)

x = 0.90 + 0.03x

0.97x = 0.90\therefore x = 0.93 g

Similarly, solve for 6.0 %, let's say, we have x g of the solute again:

0.06 = \frac{x}{30.0 + x}\therefore x = 0.06(30.0 + x)

x = 1.80 + 0.06x

0.94x = 1.80\therefore x = 1.91 g

Hence, masses should be in a range of 0.93 g to 1.91 g.

7 0
3 years ago
What happens to the number of valence electrons when a metal element forms a compound?
ioda

Answer: metals loss their valence electron during bonding to form a compound

Explanation:

3 0
3 years ago
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