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3 years ago

When a solution produces equal numbers of hydrogen and hydroxyl ions, it is said to be neutral. Select one: True False

Chemistry

1 answer:

ioda3 years ago

3 0

Answer:

true

Explanation:

The hydroxyl group is a functional group formed by an oxygen atom and a hydrogen atom.

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1. What is a food web?

Anuta_ua [19.1K]

Answer:

a producer and consumer relationship how several food chains and related.

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2 years ago

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Boron has two naturally-ocurring isotopes. Boron-10 has an abundance of 19.8% and actual mass of 10.013 amu, and boron-11 has an

aniked [119]

Answer:

Average atomic mass = 10.812 amu

Explanation:

The formula for the calculation of the average atomic mass is:

$Average\ atomic\ mass=(\frac {\%\ of\ the\ first\ isotope}{100}\times {Mass\ of\ the\ first\ isotope})+(\frac {\%\ of\ the\ second\ isotope}{100}\times {Mass\ of\ the\ second\ isotope})$

Given that:

For first isotope, Boron-10:

% = 19.8 %

Mass = 10.013 amu

For second isotope, Boron-11:

% = 80.2 %

Mass = 11.009 amu

Thus,

$Average\ atomic\ mass=\frac{19.8}{100}\times {10.013}+\frac{80.2}{100}\times {11.009}=1.982574+8.829218=10.811792$

Average atomic mass = 10.812 amu

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2 years ago

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Which term "causes an object to change motion?"

Mariana [72]

Answer:

force

Explanation:

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2 years ago

how many moles of iodine should be added to 750 grams of carbon tetrachloride to prepare a 0.24 m solution

aleksley [76]

Answer:

0.18 mol

Explanation:

Given data

Mass of carbon tetrachloride (solvent): 750 g

Molality of the solution: 0.24 m

Moles of iodine (solute): ?

Step 1: Convert the mass of the solvent to kilograms

We will use the relationship 1 kg = 1,000 g.

$750g \times \frac{1kg}{1,000g} =0.750kg$

Step 2: Calculate the moles of the solute

The molality is equal to the moles of solute divided by the kilograms of solvent. Then,

$m = \frac{moles\ of\ solute }{kilograms\ of\ solvent} \\moles\ of\ solute = m \times kilograms\ of\ solvent = \frac{0.24mol}{kg} \times 0.750kg = 0.18 mol$

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3 years ago

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(NH4)2CO3à NH3 + CO2 + H2O For this unbalanced chemical equation, what is the coefficient for carbon dioxide when the equation i

nasty-shy [4]

Answer:

The answer to your question is the letter A. 1

Explanation:

Data

Chemical reaction

(NH₄)₂CO₃ ⇒ NH₃ + CO₂ + H₂O

Reactants Elements Products

2 Nitrogen 1

1 Carbon 1

8 Hydrogen 5

3 Oxygen 3

This reaction is unbalanced

(NH₄)₂CO₃ ⇒ 2NH₃ + CO₂ + H₂O

Reactants Elements Products

2 Nitrogen 2

1 Carbon 1

8 Hydrogen 8

3 Oxygen 3

Now, the reaction is balanced,

The coefficient for Carbon dioxide is 1

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2 years ago

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