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3 years ago

Identify the positively-charged sub-atomic particle in the nucleus. A) electron B) neuron C) neutron D) proton

Chemistry

2 answers:

motikmotik3 years ago

7 0

Answer:

D) proton

Explanation:

The electron is not found in the nucleus. Neurons are not sub-atomic particles. The nucleus is made up of the two particles. The neutral, or no-charge, neutron and the positively charged proton.

shtirl [24]3 years ago

6 0

The PROTON (<em>option D</em>) is the positively charged sub-atomic particle in the nucleus.

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What is impossible for a machine to do?

Lina20 [59]

Answer:

B. apply a force in a direction that is different than the direction of the force applied to the machine

8 0

3 years ago

How many grams of aluminum chloride can be produced from 7.32g of ammonium perchlorate?

Alla [95]

Answer:

2.77g of $AlCl_{3}$ can be produced.

Explanation:

Use stoichiometry.

Balanced equation: $3Al + 3NH_{4} ClO_{4}$ ⇒ $Al_{2} O_{3} + AlCl_{3} +3NO + 6H_{2} O$

$NH_{4} ClO_{4} : AlCl_{3}$

3 : 1 ** $n=\frac{m}{M}$

0.0623** : $x$ $n=\frac{7.32}{117.49}$ = 0.0623

$3x=0.0623\\x=0.020767$

$n=\frac{m}{M}$

$m=nM$

m= (0.020767)(133.34)

m= 2.77g

5 0

2 years ago

A major component of gasoline is octane (C8H18). When octane is burned in air, it chemically reacts with oxygen gas (O2) to prod

Olin [163]

Answer:

The answer is 6.25g.

Explanation:

First create your balanced equation. This will give you the stoich ratios needed to answer the question:

2C8H18 + 25O2 → 16CO2 + 18H2O

Remember, we need to work in terms of NUMBERS, but the question gives us MASS. Therefore the next step is to convert the mass of O2 into moles of O2 by dividing by the molar mass:

7.72 g / 16 g/mol = 0.482 mol

Now we can use the stoich ratio from the equation to determine how many moles of H2O are produced:

x mol H2O / 0.482 mol O2 = 18 H2O / 25 O2

x = 0.347 mol H2O

The question wants the mass of water, so convert moles back into mass by multiplying by the molar mass of water:

0.347 mol x 18 g/mol = 6.25g

8 0

4 years ago

Read 2 more answers

A glass column is filled with mercury and inverted in a pool of mercury. The mercury column stabilizes at a height of 729 mm abo

harkovskaia [24]

The atmospheric pressure will be:

The pressure of the atmosphere resulting from the mercury column is 0.959 atm

What is atmospheric pressure?

The force that an object experiences from the weight of the air above it per unit area are known as atmospheric pressure.

Given: Height of mercury column = 729 mm Hg

To find: The pressure of the atmosphere

Calculation:

The atmospheric column resulting from the mercury column is calculated as follows:

1 atm =760 mm Hg

So, we can convert the 729 mm Hg to atm, and we get

Atmospheric pressure = 729 x 1 atm / 760 = 0.959 atm

Learn more about atmospheric pressure here,

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5 0

2 years ago

For the separation of components of a mixture, we are following different methods. What is the condition in which the process of

soldier1979 [14.2K]

Answer:

The mixture 1/ must be homogeneous where there is one or more dissolved salts; 2/ should only contain one liquid component.

Explanation:

This method drives off the liquid components from the solid components. The process typically involves heating the mixture until no more liquid remains. Prior to using this method, the mixture should only contain one liquid component, unless it is not important to isolate the liquid components. This is because all liquid components will evaporate over time. This method is suitable to separate a soluble solid from a liquid.

Note : In many parts of the world, table salt is obtained from the evaporation of sea water. The heat for the process comes from the sun.

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Hope this answer can help you. Have a nice day!

4 0

4 years ago