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Katyanochek1 [597]
3 years ago
9

What variable(s) determine the amount of kinetic energy an object has?

Chemistry
1 answer:
kherson [118]3 years ago
4 0

Answer:

Mass and speed

Explanation:

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Electronegativity is your answer.

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What are the concentrations of h3o+ and oh− in tomatoes that have a ph of 4.10?
IRINA_888 [86]

Answer : The concentration of H_3O^+ and OH^- are 7.94\times 10^{-5} and 1.258\times 10^{-10} respectively.

Solution : Given,

pH = 4.10

pH : pH is defined as the negative logarithm of hydronium ion concentration.

Formula used : pH=-log[H_3O^+]

First we have to calculate the hydronium ion concentration by using pH formula.

4.10=-log[H_3O^+]

[H_3O^+]=antilog(-4.10)

[H_3O^+]=7.94\times 10^{-5}

Now we have to calculate the pOH.

As we know, pH+pOH=14

4.10+pOH=14

pOH=9.9

Now we have to calculate the hydroxide ion concentration.

pOH=-log[OH^-]

9.9=-log[OH^-]

[OH^-]=antilog(-9.9)

[OH^-]=1.258\times 10^{-10}

Therefore, the concentration of H_3O^+ and OH^- are 7.94\times 10^{-5} and 1.258\times 10^{-10} respectively.

5 0
3 years ago
The molar mass of an unknown material is 78.430 g/mol. What is the mass of half of a mole of the unknown material?
krek1111 [17]

Answer:

hoy

Explanation:

6 0
3 years ago
Read 2 more answers
Cabr2 will most likely dissolve in which solvent? 1. bi3 2. h2o 3. br2 4. ccl4 5. c8h18
77julia77 [94]
General principle of solubility is 'like dissolves like'

CaBr_{2} is an ionic compound, wherein the constituent ions (Ca^{2+} and Br^{-}) are held by electrostatic forces of interaction. 

Such ionic compounds are soluble in polar solvents. 

Among the solvent mentioned in question, water (H_{2}O) has maximum polarity. Hence, CaBr_{2} is most likely to dissolve in H_{2}O
5 0
4 years ago
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