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worty [1.4K]
3 years ago
13

What are the main parts of the nucleus of an atom?

Chemistry
2 answers:
lesya692 [45]3 years ago
7 0
The nucleus of an atom is made up of Protons and Neutrons.

Hope this answers your question :) ~
RoseWind [281]3 years ago
6 0
A nucleus of an atom contains protons and neutrons. Therefore, B. protons and C. neutrons are the correct answers~
You might be interested in
How many mol of C7H16 would you have if you have 76.36 grams? Give your answer to 2 decimal spaces.
tensa zangetsu [6.8K]

0.761 mol of C_7H_{16}  would you have if you have 76.36 grams.

<h3>What is a mole?</h3>

A mole is defined as 6.02214076 × 10^{23}of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.

Given data:

Mass=76.36 grams

Moles = \frac{mass}{molar \;mass}

Moles = \frac{76.36 grams}{100.21 g/mol}

Moles = 0.761

Hence,  0.761 mol of  C_7H_{16} would you have if you have 76.36 grams.

Learn more about moles here:

brainly.com/question/8455949

#SPJ1

7 0
2 years ago
Suppose that you place exactly 100 bacteria into a flask containing nutrients for the bacteria and that you find the following d
tresset_1 [31]

Answer:

The order of the production of bacteria is 1.

12,787 bacteria will be present after 112 min.

0.04331 min^{-1} is the rate constant for the process.

Explanation:

Rate of formation of bacteria when there 100 bacteria: R

Rate of formation of bacteria when there 200 bacteria: R' =2R

Rate of formation of bacteria is directly proportional to the number of bacteria:

\frac{R}{R'}=\frac{k[200]^x}{k[400]^x}

\frac{R}{2R}=(\frac{200}{400})^x

x = 1

The order of the production of bacteria is 1.

The half life of the process = t_{1/2}=16 minutes

Rate constant of the process =  k

For first order process k is only dependent on half life:

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{16 min}=0.04331 min^{-1}

For the first order process the increment numbers is given ;

N=N_o\times e^{kt}

Where:

N_o= Initial population

N = Population after time t.

We have ;

N_o=100

t = 112 minutes

N=100\times e^{0.04331 min^{-1}\times 112 min}

N = 12,786.82\approx 12,787

12,787 bacteria will be present after 112 min.

0.04331 min^{-1} is the rate constant for the process.

5 0
3 years ago
Calcium nitrate tetrahydrate dissolves in cold water to the extent of 266 g per 100 cm3. What is the concentration of nitrate io
Soloha48 [4]

Answer : The correct option is, (b) 22.5 M

Explanation : Given,

Mass of calcium nitrate tetrahydrate = 266 g

Molar mass of calcium nitrate tetrahydrate  = 236.15 g/mole

Volume of solution = 100cm^3=100mL

Molarity : It is defined as the moles of solute present in one liter of solution.

Formula used :

Molarity=\frac{\text{Mass of calcium nitrate tetrahydrate }\times 1000}{\text{Molar mass of calcium nitrate tetrahydrate }\times \text{volume of solution in ml}}

Now put all the given values in this formula, we get:

Molarity=\frac{266g\times 1000}{236.15g/mole\times 100ml}=11.26mole/L=11.26M

As calcium nitrate tetrahydrate dissociate to give 1 mole of calcium ion, 2 moles of nitrate ion and 4 moles of water.

The concentration of nitrate ion = 2\times 11.26M=22.5M

Thus, the concentration of nitrate ion is, 22.5 M

4 0
3 years ago
Give 3 example<br>of a<br>solid that sublimes.​
tino4ka555 [31]

Here are a few examples :)

iodine (I2)

naphthalene

aresenic (As)

ferrocene

water (H2O)

carbon dioxide (CO2)

Hope this helps :)

5 0
3 years ago
The correct mathematical expression for finding the molar solubility (s) of calcium phosphate is
GalinKa [24]

Answer is: The molar solubility of calcium phosphate is 108s⁵ = Ksp.

<span> Balanced chemical reaction: Ca</span>₃(PO₄)₂(s) → 3Ca²⁺(aq) + 2PO₄³⁻(aq).<span>
[Ca²</span>⁺] = 3s(Ca₃(PO₄)₂) = 3s.<span>
[PO</span>₄³⁻] = 2s.<span>
Ksp = [Ca²</span>⁺]³ · [PO₄³⁻]².<span>
Ksp = (3s)³ · (2s)².
Ksp = 108s</span>⁵.

s = ⁵√(Ksp ÷ 108).

6 0
3 years ago
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