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frutty [35]
3 years ago
15

What is in the center of an atom? what is this portion of the atom called?

Chemistry
1 answer:
Ludmilka [50]3 years ago
6 0
The Nucleus: The Center of an Atom. The nucleus, that dense central core of the atom, contains both protons and neutrons. Electrons are outside the nucleus in energy levels.
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What is the PH of a 7.5x10^-3 M OH solution
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pH: 11.8750612634
pOH: 2.12493873661
[H+]: 1.33333333333E-12
[OH-]: 0.0075
BASE
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3 years ago
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4) How many grams are there in 7.40 moles of AgNO3
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Answer:

1260 grams

Explanation:

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suggest one reason why 1g of cobalt oxide nanoparticles is a better catalyst than 1g of cobalt oxide powder
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Particles are smaller, a reactant would be exposed to more cobalt atoms. Causing the reaction to happen quicker than with larger particles.
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3 years ago
92 grams of ethanol,C2H5OH, is dissolved in 1 liter of solution. Determine the molarity (M)
const2013 [10]

Answer:  1.997 M

Explanation:

molarity = moles of solute/liters of solution or M = \frac{mol}{L}

first we have to find our moles of solute (mol), which you can find by dividing the mass of solute by molar mass of solute

mass of solute: 92 g

molar mass of solute: 46.08 g/mol

let's plug it in:

\frac{92 g}{46.08 g/mol} = 1.997 mol

next, we plug it into our original equation:

\frac{1.997mol}{1 L} = 1.997 M

4 0
3 years ago
Describe the scale used to measure the basicity of a substance. Demonstrate how you could differentiate a weak base from a stron
amm1812

The scale used to measure the basicity of a substance is called the pH Scale. A base which when measured on a pH scale obtains a  value greater than 7 but less than or equal to 10 is weak base and from 10-14 is strong base

<h3>Meaning of Base and basicity</h3>

A base is any substance that has the ability to accept hydrogen ion in water and also netralize an acid when mixed together.

Basicity is an attribute associated with the pH scale measurement of values above 7 to 14.

Basicity increases on the scale from 7 to 14. On the pH scale 7 is neutral. So the higher we go the more basic a solution becomes until it gets to its highest point which is 14.

In conclusion, The scale used to measure the basicity of a substance is called the pH Scale. A base which when measured on a pH scale obtains a  value greater than 7 but less than or equal to 10 is weak base and from 10-14 is strong base

Learn more about basicity : brainly.com/question/172153

#SPJ1

6 0
1 year ago
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