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algol13
3 years ago
10

The molarity of a solution is 2.1m. How many mole of solute is in a 7.4 liter solution

Chemistry
1 answer:
kodGreya [7K]3 years ago
5 0
.............................

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Sound waves move the slowest through which medium :<br> water<br> ice<br> air<br> wood
sasho [114]

Answer

Sounds travel slowest in gasses so it would be air

5 0
3 years ago
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How much money will it cost to drive a school bus 94.00 miles if it gets 6.500 miles per gallon and gas costs $2.459/gallon?​
bagirrra123 [75]

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It will cost $35.5602

Explanation:

$2.459 /6.5 (mpg) = 0.3783 (cents per mile)

$0.3783 (cost per mile) * 94 (total miles) = $35.5602 total

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2 years ago
Substance in mixtures do not change chemically. True or false
AnnZ [28]

Answer:

find the answer elsewhere

Explanation:

8 0
3 years ago
An atom of Fe has 30 neutrons. What is the mass number of this atom?
SVETLANKA909090 [29]

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56

Explanation:

The mass number of an atom is a sum of its number of protons and neutrons. Iron (Fe) has an atomic number of 26. This means that it has 26 protons. Since we know it has 26 protons and are told it has 30 neutrons. The mass number of this atom of Iron is 26+30 = 56

Hope this helped!

7 0
3 years ago
You burn a 15g jellybean to warm 50 mL of water, which increases the temperature of the water 25 °C. How many calories of heat a
Juli2301 [7.4K]

Answer:

Q = 375\,cal

Explanation:

The quantity of heat transfered from the jellybean to the water is:

Q = \rho\cdot V \cdot c\cdot \Delta T

Q = \left(1\,\frac{g}{cm^{3}}\right)\cdot (15\,cm^{3})\cdot \left(1\,\frac{cal}{g\cdot ^{\circ} C} \right)\cdot (25\,^{\circ}C )

Q = 375\,cal

7 0
3 years ago
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