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Over [174]
4 years ago
7

hen a chemical reaction occurs, the physical and chemical properties of the reactants are the same as the properties of the prod

ucts. True False
Chemistry
1 answer:
Doss [256]4 years ago
3 0

Answer: False

Explanation:

In chemical reactions new substances are formed.

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What are the missing coefficients for the chemical equation
aniked [119]

Answer:

2C2H2 + 5O2 → 4CO2 + 2H2O

Explanation:

8 0
3 years ago
Given the reaction: HNO2 (aq) <-> H+ (aq) + NO2- (aq); write the ionization constant for the reaction.
Nuetrik [128]

Answer:

see explanation

Explanation:

HNO₂ ⇄ H⁺ + NO₂⁻

Ka = [H⁺][NO₂⁻]/[HNO₂]

4 0
3 years ago
Determine the molarity of 50 mL of HCl solution with unknown concentration, titrated with 75 mL of 4.0 M NaOH.
Aleks04 [339]

Answer:

The answer to your question is 6.0M, I know that you said it was not the answer, but it is. Check the significant figures.

Explanation:

Data

Molarity = ?

volume of HCl = 50 ml

volume of NaOH = 4 M

volume = 75 ml

Balanced chemical reaction

        HCl  +  NaOH  ⇒  NaCl  +  H₂O

Process

1.- Calculate the moles of NaOH

Molarity = moles/volume

moles = Molarity x volume

moles = 4 x 0.075

moles = 0.3 of NaOH

2.- Use proportions to calculate the moles of HCl

                 1 mol of NaOH ----------------- 1 mol of HCl

                0.3 moles of NaOH ----------  x

                 x = (0.3 x 1)/1

                 x = 0.3 moles of HCl

3.- Calculate the molarity of HCl

Molarity = 0.3/0.05

Molarity = 6.0 M

8 0
4 years ago
Read 2 more answers
URGENT
antoniya [11.8K]

Answer:

a

Explanation:

8 0
3 years ago
I’ve missed this question twice now. Please help
Molodets [167]

Answer:

then it only gotta be 2 other options .

Explanation:

4 0
3 years ago
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