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1 year ago

A nuclear reaction can be controlled using which of the following?

Chemistry

1 answer:

gavmur [86]1 year ago

3 0

Control rods is regarded as a substance which can control nuclear reaction and is denoted as option A.

<h3>What is Nuclear reaction?</h3>

This is a type of reaction which involves the nuclei of an atom being split or joined together and is usually accompanied with a great amount of energy emitted in the form of heat.

The two types of nuclear reaction include:

Nuclear fusion

Nuclear fission

Nuclear fusion involves the collision of two or more nuclei in other form a new atom while nuclear fission involves splitting the atoms to form other products and involves a very high amount of energy and exposure to organisms should be prevented as the radiations can alter DNA.

Control rods are commonly used in nuclear reactors and control the rate of fission in the fuel used. This is therefore the reason why it was chosen as the most appropriate choice.

Read more about Nuclear reaction here brainly.com/question/984564

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Codeine C18H21NO3 is a weak organic base. A 5.0 x 10^-3 M solution of codeine has a pH of 9.95. Calculate the value of Kb for th

arsen [322]

Answer:

Kb = $4.45\times10^{-7}\ mol/L$

$p^{Kb}=6.35$

Explanation:

For a weak organic base, the formula to find $p^{OH}$ is given by:

$p^{OH}=p^{K_b}+\log c$

where c is the concentration of base.

Here c= $5\times10^{-3}\ M$

$p^{H}=9.95\\p^{OH}=14-p^{H}=14-9.95=4.05$

Substituting the above values in the formula,we get:

$p^{k_b}=p^{OH}-\log c\\p^{k_b}=4.05-\log (5\times10^{-3})\\p^{K_b}=6.35\\K_b=$antilog 6.35=4.45\times10^{-7}\ mol/L$

Hence:

Kb = $4.45\times10^{-7}\ mol/L$

$p^{Kb}=6.35$

7 0

2 years ago

A sample of gas occupies a volume of 27 mL at a temperature of 161K. What is the volume of the temperature if raised to 343K?

d1i1m1o1n [39]

Answer: The volume is 57.52 mL if the temperature if raised to 343K.

Explanation:

Given: $V_{1}$ = 27 mL, $T_{1}$ = 161 K

$V_{2}$ = ?, $T_{2}$ = 343 K

According to Charles law, at constant pressure the volume of an ideal gas is directly proportional to temperature.

Formula used is as follows.

$\frac{V_{1}}{T_{1}} = \frac{V_{2}}{T_{2}}\\\frac{27 mL}{161 K} = \frac{V_{2}}{343 K}\\V_{2} = 57.52 mL$

Thus, we can conclude that volume is 57.52 mL if the temperature if raised to 343K.

4 0

2 years ago

Help please giving brainliest

Kitty [74]

Answer:

i think protons and neutrons

Explanation:

im not sure tho

8 0

2 years ago

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Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) Part A What volume of hydrogen at 0 ∘C and 1.00

Tanzania [10]

Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)

(since the molar mass of Mg is not given, assuming that it's mola mass is 24gmol¯1)

1st find the moles of Mg using the equation n=m/M where

n - moles

m - mass

M - molar mass

Therefore :

$n \: = 9.45 \:g\div 24g {mol}^{ - 1}$

n = 0.39375mol

n = 0.39mol

Then using the equation n=V/Vm where;

n = mol

V = volume

Vm = molar volume

Find the volume.

n = V/Vm

(n =0.39mol , Vm = 22.4dm³mol¯¹)

V = 0.39mol×22.4dm³mol¯¹

V = 8.736dm³

7 0

2 years ago

This triple beam balance is used to measure ________ in grams. A) density B) mass C) volume D) weight

Alex787 [66]

Answer:

B) mass

Explanation:

Triple beam balance -

It is an instrument , which is used for the measurement of the mass , in a very accurate and precise manner .

The error range of this balance is +/- 0.05 gram .

It consists of three beam , of three different sizes , where the difference in the beam shows the difference in the weights and readings .

Hence, from the given statement of the question,

The correct option is B. mass.

8 0

2 years ago