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Marizza181 [45]
3 years ago
11

Which of the following is a correct observation when water is added to quick lime?

Chemistry
2 answers:
masya89 [10]3 years ago
7 0

Answer:

c

Explanation:

thw observation of water that is added

il63 [147K]3 years ago
3 0
D)no change
Cause water is a poor conductor of heat and electricity
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What is nitrogen state at 20 celcius
SpyIntel [72]
Hi there, I believe that nitrogen turns into a liquid at 20 degrees Celsius. Thererore, the nitrogen state is liquid.
7 0
3 years ago
What is the new solution concentration when 150. mL of water is added to 200. mL of a 3.55 M HBr solutions.
Agata [3.3K]

Answer:

The new concentration is 2.03M

Explanation:

Step 1: Data given

A 200 mL 3.55 M HBr is diluted with 150 mL

Step 2: The dilution

In a dilution, the ratio that exists between the concentration of the stock solution and the concentration of the diluted solution equals the ratio that exists between the volume of the diluted solution and the volume of the stock solution.

Dilution factor = [stock sample]/[diluted sample] = diluted volume / stock volume

In this case, the volume of the stock solution is 200 mL

Adding  150 mL  of water to the stock solution will dilute it to a final volume of 200 + 150 = 350 mL

The dilution factor wll be 350/200 = 1.75

This makes the diluted concentration:

3.55/1.75 = 2.03M

The new concentration is 2.03M

3 0
3 years ago
Convert 0.950 atm of pressure to its equivelant in millimeters of mercury
Jet001 [13]
1 atm = 760mmHg

0.950 atm = (0.950 atm) * (1 atm) = 0.95

Answer: 0.96 mmHg
6 0
3 years ago
Help asap 70 points PLEASEEE!!!
olganol [36]

Answer:

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Explanation:

6 0
3 years ago
Hydrogen has two naturally occurring isotopes, 1H and 2H. Chlorine also has two naturally occurring isotopes, 35Cl and 37Cl. Thu
rodikova [14]

Answer:

Molecules in order of decreasing rate of effusion:

^1{H}^{35}Cl>^2H^{35}Cl>^1H^{37}Cl>^2H^{37}Cl

Explanation:

Mass of ^1H^{35}Cl gas= M_1= 36 g/mol

Mass of ^1H^{37}Cl gas =M_2= 38 g/mol

Mass of ^2H^{35}Cl gas =M_3= 37 g/mol

Mass of ^2H^{37}Cl gas =M_4= 39 g/mol

According Graham's law:

'The rate of effusion or diffusion of gas is inversely proportional to the square root of the molar mass of the gas'.The equation given by this law follows the equation:

\text{Rate of diffusion}\propto \frac{1}{\sqrt{\text{Molar mass of the gas}}}

So, higher the molecular mass of the gas lower will be the effusion rate and vice versa.

Increasing order of molecular masses of the given gases:

M_1

Decreasing order of effusion rate respective to gases:

R_1>R_3>R_2>R_4

Molecules in order of decreasing rate of effusion:

^{1}\textrm{H}^{35}Cl> ^{2}\textrm{H}^{35}Cl>^{1}\textrm {H}^{37}Cl>^{2}\textrm{H}^{37}Cl

8 0
3 years ago
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