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3 years ago

Nuclear Fission and Nuclear Fusion

Chemistry

2 answers:

Free_Kalibri [48]3 years ago

8 0

Answer:

Polonium: Number of protons = 82

Number of neutrons = 206

Sodium: Number of protons = 11

Number of neutrons = 22

steposvetlana [31]3 years ago

5 0

Answer:

My teacher just gave up on me and gave me the answers so here are all the attatchments she gave me. Hope this helped :)

Explanation:

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What is the pH of a 3.5 x 10-^6 M solution of HCl?

Svetach [21]

Answer:

5.46

Explanation:

From the question,

pH this can be defined as the acidity or alkalinity of a solution.

The expression for pH is given as

pH = -log(H⁺)...................... Equation 1

Where H⁺ = Hydrogen ion of HCL

Given: H⁺ = 3.5×10⁻⁶ M

Substitite this value into equation 1

pH = -log(3.5×10⁻⁶)

pH = 5.46

Hence the pH of HCl is 5.46

8 0

3 years ago

Definition of a delocalised electron

Ray Of Light [21]

Answer:

Electrons in a metal that aren't bonded with only one atom

7 0

4 years ago

*Asap*

ira [324]

Answer:

(a).

$order \: of \: A = 2 \\ order \: of \:B = 0 \\ rate = k[A] {}^{2} [B]$

(b)

$0.32 \times {10}^{ - 3} = k {(0.12)}^{2} (0.15) \\ k = 0.148 \: {mol}^{ - 2} {dm}^{6} {s}^{ - 1}$

(c). The rate increases because kinetic energy of reactant molecules increases.

7 0

3 years ago

A teacher cut an apple into three wedges of the same size. She dipped one wedge in lemon juice, dipped another in water, and lef

aleksandrvk [35]

Answer:

The responding variable of this experement is the outcome and that would be that the one in lemon juice responded and the one in water didn't (the other one is the control). Thus the responding varible is the one in lemon juice.

Explanation:

4 0

3 years ago

Read 2 more answers

Determine the pH of a 0.188 M NH 3 solution at 25°C. The K b of NH 3 is 1.76 × 10 -5.

Archy [21]

Answer:

pH is 8.52

Explanation:

According to the working in the photo

5 0

3 years ago