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Mashcka [7]
3 years ago
15

What elements react with mercury?

Chemistry
1 answer:
garri49 [273]3 years ago
7 0

fluorine, F2, chlorine, Cl2, bromine, Br2, or iodine, I2

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What is the pH of a solution with (H3O+)=5.6x10-2M?
balu736 [363]

Answer:

Explanation:

Given parameters:

Concentration of H₃O⁺  = 5.6 x 10⁻²M

Solution:

To solve for the concentration of H₃O⁺ in the solution, we simply use the expression below:

            pH = -log₁₀[H₃O⁺]

where [H₃O⁺] =  5.6 x 10⁻²M is the concentration of H₃O⁺

            pH = -log₁₀[5.6 x 10⁻²] = - x -1.25 = 1.25

3 0
3 years ago
Read 2 more answers
100.0 mL of 3.8M NaCN, the minimum lethal concentration of sodium cyanide in blood serum
9966 [12]

The given question is incomplete. The complete question is:

Calculate the number of moles and the mass of the solute in each of the following solution: 100.0 mL of 3.8 × 10−5 M NaCN, the minimum lethal concentration of sodium cyanide in blood serum

Answer: The number of moles and the mass of the solute are 0.38\times 10^{-5} and 18.62\times 10^{-5}g respectively

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

Molarity=\frac{n\times 1000}{V_s}

where,

n = moles of solute

V_s = volume of solution in ml

3.8\times 10^{-5}M=\frac{n\times 1000}{100.0}

n=0.38\times 10^{-5}

n = moles of NaCN = \frac{\text {given mass}}{\text {Molar mass}}

0.38\times 10^{-5}=\frac{x}{49g/mol}

x=18.62\times 10^{-5}g

Thus the number of moles and the mass of the solute are 0.38\times 10^{-5} and 18.62\times 10^{-5}g respectively

6 0
3 years ago
When the volume of the gas is 8L what is the pressure being exerted upon it?
Harlamova29_29 [7]

Answer:

54

Explanation:

3 0
3 years ago
In this question why devide by number of moles ?
ArbitrLikvidat [17]
Because M = mol/L or mL. 15.0 x 0.350/42.0 = M
3 0
3 years ago
What functional feature(s) does the phosphate group contribute to the structure of a phospholipid? select all that apply. select
bezimeni [28]
A phospholipid structure is shown in the picture attached. It has three parts: the hydrophobic tail, the hydrophilic head and the phosphate group in the center. Thus, the function of the phosphate group is to link the hydrophobic and hydrophilic parts of a phospholipid. Specifically, the phosphate group is part of the hydrophilic head. So, it is used to connect the phospholipids to polar compounds.

5 0
3 years ago
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