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Natasha_Volkova [10]
3 years ago
14

NEED ANSWER ASAP!!

Chemistry
1 answer:
dolphi86 [110]3 years ago
6 0
C. sour taste!
hope this helped!
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Calculate the molality of a solution formed by dissolving 27.8 g of lii in 500.0 ml of water.
Citrus2011 [14]

Answer: Molarity of a solution : 0.416 M

Molarity = \frac{(Moles of solute)}{(Volume of solution in L)}

In our question LiI(Lithium Iodide) is solute and we need to find the moles of LiI.

Given grams of LiI = 27.8g , Volume of solution = 500 mL

Moles of LiI = \frac{Grams}{Molar mass}

Molar mass of LiI = 133.85 g/mol

Moles of LiI = \frac{27.8g}{133.85\frac{g}{mol}}

Moles of LiI = 0.208 mol

To find molarity we need volume of solution in 'L' , so we need to convert 500 mL to L.

1 L = 1000 mL

(500 mL)\times \frac{(1L)}{(1000mL)}

Volume = 0.5 L

Molarity = \frac{(Moles of solute)}{(Volume of solution in L)}

Molarity = \frac{(0.208mol)}{(0.5 L)}

Molarity = 0.416\frac{mol}{L} or 0.416 M

6 0
4 years ago
Compared to other minerals, a mineral that is ranked higher on the Moh’s scale will be:
koban [17]

Answer is: a. harder.

Friedrich Mohs devised a scale that tested mineral hardness, which means the resistance of a mineral to being scratched. This scale (from 1 to 10) is known as the Mohs Hardness Test.

For examples:

fingernail (hardness = 2.5).

copper penny (hardness = 3)

glass plate or steel knife (hardness = 5.5)

steel file (hardness = 6.5).

According to this scale hardness of the mineral is between 5.5 and 6.5.

4 0
4 years ago
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Describe nucleus of atom​
tresset_1 [31]

Answer:

the nucleus is made up of protons and neutrons

5 0
3 years ago
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What is the molar mass of water in the hydrate? FeSO4 • 7H2O
Rainbow [258]
M=7M(H₂O)

M=7*18.015 g/mol = 126.105 g/mol
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4 years ago
How many molecules are there in 0.75 mol NH3
vitfil [10]
3 *0.75 = 2.25 mol that’s is ur answer for this question
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3 years ago
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