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Margaret [11]
3 years ago
11

Which of the following is the best explanation for the fact that crushing increases the rate at which a solid dissolves in a liq

uid?
Select one:
a. The temperature of the solution is increased when the solid is crushed.
b. The surface area of the solute is increased when it is crushed.
c. Crushing increases the amount of solute present.
d. Crushing makes stirring the solution easier.​
Chemistry
1 answer:
Oksana_A [137]3 years ago
7 0
It’s D cause i know I know I know I know
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350.0-mL of 0.50 M hydrogen sulfate solution is reacted with 15.0 grams of sodium hydroxide. What volume of water will be produc
Evgesh-ka [11]

The volume of water that will be produced from the reaction will be 6.3 mL

<h3>Stoichiometric calculation</h3>

From the equation of the reaction:

H_2SO_4 + 2NaOH --- > Na_2SO_4 + 2H_2O

The mole ratio of hydrogen sulfate to sodium hydroxide is 1:2.

Mole of hydrogen sulfate = 0.50 x 350/1000 = 0.175 moles

Mole of 15 grams sodium hydroxide = 15/40 = 0.375 moles

Thus, hydrogen sulfide is the limiting reagent.

Mole ratio of hydrogen sulfide to water = 1:2.

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1 gram of water = 1 ml.

Thus, 6.3 grams of water will be equivalent to 6.3 mL

More on stoichiometric calculation can be found here: brainly.com/question/27287858

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6 0
2 years ago
How could an alpha particle pass straight through the metal foil and strike the center of the phosphor screen on the other side
djverab [1.8K]
I think you refer to  Rutherford's Gold Foil Experiment alpha particles pass through because of the enormous amount of empty space inside the atom. 


>>>more details here<<<
to have its trajectory affected the alpha particle has to pass "near" the nucleus to interact with the positive charge of the nucleus.
the fact is that internally the gold atoms are basically empty space and the nucleus represents only a small portion of the entire volume. only few alpha particles pass near the nucleus 

picture added><><**><>< below}{<{>} 
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8 0
3 years ago
Given the empirical formula NO with a molar mass of 59.98 g/mol, what is the molecular formula for this compound
Xelga [282]

Answer:

N₂O₂

Explanation:

The empirical formula NO tells us that the number of Nitrogen atoms will always be equal to the number of Oxygen atoms.

The <em>molar mass of the simplest compound, NO</em>, would be:

  • Molar Mass of NO = Molar Mass of N + Molar Mass of O = 30 g/mol

We <u>divide the molar mass of the problem compound by the molar mass of the simplest compound</u>:

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This means we<u> multiply the empirical formula times </u><u>2</u>:

  • The molecular formula is N₂O₂
5 0
3 years ago
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