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3 years ago

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

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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

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3 years ago

When the volume of the gas is 8L what is the pressure being exerted upon it?

Harlamova29_29 [7]

Answer:

Explanation:

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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

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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.

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3 years ago