All categories

4 years ago

I need help !!!!!!!!!!! Plz

Chemistry

1 answer:

pishuonlain [190]4 years ago

5 0

Answer: 1: B. It will speed up the reaction.

2: A. Increase the concentration of a reactant.

3: A. They act as catalysts.

4: C. A catalyst decreases the activation energy needed for a reaction.

5: D. collision theory.

Explanation: I just took the quiz:)

You might be interested in

What is hydrolysis?

harkovskaia [24]

Answer:

Hydrolysis is any chemical reaction in which a molecule of water ruptures one or more chemical bonds.

Explanation:

Example:

Dissolving a salt of a weak acid or base in water is an example of a hydrolysis.

8 0

4 years ago

Read 2 more answers

Which of the following chemical reactions produces water via a

DiKsa [7]

Answer:

Should be A, but also I think there should be an arrow between O2 and 2H2O

6 0

3 years ago

What is the mass of a 500.00 mL sample of seawater with a density of 1.025 g/mL?

iragen [17]

Answer:

Mass of seawater = 512.5 gram

Explanation:

Given:

Volume of seawater = 500 ml

Density of seawater = 1.025 g/ml

Find:

Mass of seawater

Computation:

Mass of seawater = Volume of seawater × Density of seawater

Mass of seawater = 500 × 1.025

Mass of seawater = 512.5 gram

7 0

4 years ago

The independent variable is the only factor that a scientist

Eva8 [605]

Changes. the dependent variable is affected by the independent variable

3 0

3 years ago

Read 2 more answers

What is the final acetate ion concentration when 69. g Ba(C2H3O2)2 is dissolved in enough water to make 970. mL of solution? The

mario62 [17]

Answer:

0.56M of acetate ions

Explanation:

Given parameters:

Mass of Ba(C₂H₃O₂)₂ = 69g

Volume of water = 970mL = 0.97dm³

Molar mass of Ba(C₂H₃O₂)₂ = 255.415g/mol

Unknown:

Concentration of acetate ion in the final solution = ?

Solution:

Let us represent the dissociation;

Ba(C₂H₃O₂)₂ = Ba²⁺ + 2C₂H₃OO⁻

We see that 1M of will produce 2M of acetate ions

Now, let us find the molarity of the barium acetate;

Molarity = $\frac{number of moles }{volume}$

Number of moles of Ba(C₂H₃O₂)₂ = $\frac{mass}{molar mass}$

Number of moles = $\frac{69}{255.415}$ = 0.27moles

Molarity of Ba(C₂H₃O₂)₂ = $\frac{0.27}{0.97}$ = 0.28M

since 1M of Ba(C₂H₃O₂)₂ will produce 2M of acetate ions

0.28M of Ba(C₂H₃O₂)₂ will produce 2 x 0.28 = 0.56M of acetate ions

3 0

4 years ago