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Sergeu [11.5K]
3 years ago
6

What is the value of standard pressure

Chemistry
1 answer:
Sladkaya [172]3 years ago
4 0

Answer:Standard Pressure is 1 Atm, 101.3kPa or 760 mmHg or torr.

STP is the "standard" conditions often used for measuring gas density and volume. At STP, 1 mole of any gas occupies 22.4L.

Explanation:

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Veronika [31]

I believe the answer is B??????????? Hope this helps

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3 years ago
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What is the formula ofchromium(III) hydrogensulfate?
FromTheMoon [43]

Answer:

Cr (HSO4)3

Explanation:

its molecular weight is 343.20 g/mol

its molecular formula can also be written as CrH3O12S3

molar mass of Cr (HSO4)3 can be calculated by following method;

atomic mass of Cr = 51.9961 u

atomic mass of H = 1 u

atomic mass of S = 32.065 u

atomic mass of O = 16 u

molar mass of Cr(HSO4)3 =  51.9961+ 1.00784×3 + 32.065×3 + 15.999×12

molar mass of Cr(HSO4)3 =51.9961+3.02352+96.195+ 191.988

molar mass of Cr(HSO4)3 = 343.20 g/mol

3 0
3 years ago
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3 0
3 years ago
Common table salt is sodium chloride. when table salt is dissolved in water, the solution conducts electricity because
enot [183]
<span>In commonly table salt is sodium chloride. When table salt is dissolved in water, the solution conducts electricity because sodium chloride is made up of ions, it is called an ionic substance.</span>
4 0
3 years ago
There is about 1.0 g of calcium as Ca2+ in 1.0 L of milk. What is the molarity of Ca2+ in milk?
meriva

Explanation:

It is known that molarity is the number of moles present in a liter of solution.

           Molarity = \frac{\text{no. of moles}}{volume}

Also, number of moles equal mass divided by molar mass. And, molar mass of calcium is 40.07 g/mol.

               No. of moles = \frac{mass}{\text{molar mass}}

                                     = \frac{1.0 g}{40.07 g/mol}

                                     = 0.025 mol

Therefore, calculate the molarity as follows.

             Molarity = \frac{\text{no. of moles}}{volume}

                            = \frac{0.025 mol}{1.0 L}  

                            = 0.025 M

Thus, we can conclude that molarity of Ca^{2+} in milk is 0.025 M.

7 0
3 years ago
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