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boyakko [2]
3 years ago
14

12 - 13 if you can, that would be appreciated

Chemistry
1 answer:
RideAnS [48]3 years ago
7 0
12: B, since it said the temperature is below 3,500
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what would be the value of 'G' on the surface of earth if it's mass was twice & its radius half of what it is how?​
Katen [24]

Answer:

What would be the value of g on the surface of the earth if its mass was twice and its radius half of what it is now ? g2=8g1 Thus , the value of g on the surface of the earth would be eight times the present value.

Explanation:

Hope this helps! :)

8 0
3 years ago
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How many moles of NaCl are contained in 100.0 mL of a 0.20 M solution?​
AURORKA [14]

Answer:

0.02 mol.

Explanation:

8 0
2 years ago
How many milliliters of 2.19 M H2SO4 are required to react with 4.75 g of solid containing 21.6 wt% Ba(NO3)2 if the reaction is
Setler [38]

Answer:

1.7927 mL

Explanation:

The mass of solid taken = 4.75 g

This solid contains 21.6 wt% Ba(NO_3)_2, thus,

Mass of Ba(NO_3)_2 = \frac {21.6}{100}\times 4.75\ g = 1.026 g

Molar mass of Ba(NO_3)_2 = 261.337 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Moles= \frac{1.026\ g}{261.337\ g/mol}

Moles= 0.003926\ mol

Considering the reaction as:

Ba(NO_3)_2+H_2SO_4\rightarrow BaSO_4+2HNO_3

1 moles of Ba(NO_3)_2 react with 1 mole of H_2SO_4

Thus,

0.003926 mole of Ba(NO_3)_2 react with 0.003926 mole of H_2SO_4

Moles of H_2SO_4 = 0.003926 mole

Also, considering:

Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}

Molarity = 2.19 M

So,

2.19=\frac{0.003926}{Volume\ of\ the\ solution(L)}

Volume = 0.0017927 L

Also, 1 L = 1000 mL

<u>So, volume = 1.7927 mL</u>

5 0
3 years ago
How many torr, atms, and psi is 303.9 kPa equal to?
klio [65]

Answer:

2.99 atm

2279.43 torr

44.07 psi

Explanation:

Torr, atms and psi all units are units of pressure.

Conversion from KPa to atm:

1 KPa is equal to 0.00987 atm. To convert from KPa to atm we will multiply the  given value with 0.00987 atm.

303.9 KPa × 0.00987 atm / 1 KPa

2.99 atm

Conversion from KPa to torr:

1 KPa is equal to the 7.5006 torr. To convert from KPa to torr we will multiply the KPa value by 7.5006.

303.9 KPa × 7.5006 torr/ 1 KPa

2279.43 torr

Conversion from KPa to psi:

psi is pound per square inch. 1 KPa is equal to the 0.1450 psi. To convert from KPa to psi we will multiply the KPa value by 0.1450 psi.

303.9 KPa × 0.1450 psi /  1 KPa

44.07 psi

8 0
2 years ago
Read the excerpt from Kennedy’s inaugural address. To those people in the huts and villages of half the globe struggling to brea
Anna007 [38]

Answer:

an emotional appeal to emphasize the United States' commitment to justice

Explanation:

3 0
2 years ago
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