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3 years ago

How many lithium atoms does 4Li2O?

Chemistry

1 answer:

babunello [35]3 years ago

3 0

8 atoms in Lithium..

<h3>If this answer helps you plz mark as brainlist..</h3><h2>But, don't report my answer..</h2>

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H2SO4 + 2NaNO2 → 2HNO2 + Na2SO4

dem82 [27]

<h3>Answer:</h3>

23.459 g NaNO₂

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Stoichiometry

Reading a Periodic Table
Using Dimensional Analysis

<h3>Explanation:</h3>

Step 1: Define

[RxN] H₂SO₄ + 2NaNO₂ → 2HNO₂ + Na₂SO₄

[Given] 24.14714 g Na₂SO₄

Step 2: Identify Conversions

[RxN] 1 mol Na₂SO₄ = 2 mol NaNO₂

Molar Mass of Na - 22.99 g/mol

Molar Mass of N - 14.01 g/mol

Molar Mass of O - 16.00 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of Na₂SO₄ - 2(22.99) + 32.07 + 4(16.00) = 142.05 g/mol

Molar Mass of NaNO₂ - 22.99 + 14.01 + 2(16.00) = 69.00 g/mol

Step 3: Stoichiometry

Set up: $\displaystyle 24.14714 \ g \ Na_2SO_4(\frac{1 \ mol \ Na_2SO_4}{142.05 \ g \ Na_2SO_4})(\frac{2 \ mol \ NaNO_2}{1 \ mol \ Na_2SO_4})(\frac{69.00 \ g \ NaNO_2}{1 \ mol \ NaNO_2})$
Multiply/Divide: $\displaystyle 23.4587 \ g \ NaNO_2$

Step 4: Check

Follow sig fig rules and round. We need 5 sig figs (instructed).

23.4587 g NaNO₂ ≈ 23.459 g NaNO₂

8 0

3 years ago

Read 2 more answers

A 0.15 M NaOH solution has a volume of 0.125 L but is then diluted to 0.15 L. What is the concentration of the new solution

tresset_1 [31]

Answer:

.125 M

Explanation:

.15 M/L * .125 L = .01875 moles

now dilute to 150 cc (by adding 25 cc)

.01875M / (150/1000) = .125M

5 0

2 years ago

Unstable isotopes occur when the strong force is unable to overcome the _________.

Alecsey [184]

Unstable isotopes occur when the strong force is unable to overcome the electrostatic force.
There are no stable isotopes in the elements at the upper end of the periodic table, which clearly demonstrates the limit of the ability of the nuclear binding energy or the residual strong force, to overcome the electrostatic repulsion of all those protons in the nucleus.

6 0

3 years ago

What is the molarity of a solution that has 0.030 mil of NaCl dissolved in 1.2 L solution?

aliina [53]

Answer:

"Well, by definition,

molarity=

moles of solute

volume of solution"

Explanation:

THE LINES UNDER moles of solute MEANS ITS OVER volume of solution"

I THINK IM RIGHT PLZ NOT HATE ON ME IF IN WRONG

7 0

4 years ago

The free energy of ATP hydrolysis is used to maintain the concentration of Ca2 inside the cell to be constant. Calculate the num

Delicious77 [7]

Answer:

The response can be defined as follows:

Explanation:

ATP is a hydrolysis energy-saving money of the cell. It is used to support the cell's endothermic processes.

$ATP\ +\ H_{2}O\ \rightleftharpoons \ ADP\ +\ P_{i}\\\\Q\ = \ \frac{[ADP][P_{i}]}{[ATP][H_{2}O]}\\\\ADP= 0.250 \ M\\\\P_i = 0.010 \ M\\\\ATP = 0.150 \ M\\\\H_2O = 55.55 \ M\\\\\Delta G \ =\ \Delta G^{o}\ +\ 2.303\ RT\ \log\ Q\\\\R = 8.314 \frac{J}{mol\ K}\\\\T = 298\ K\\\\$

4 0

3 years ago