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2 years ago

Use the scenario below to answer the following

Chemistry

1 answer:

Rom4ik [11]2 years ago

5 0

Answer:

i had this question a couple of weeks ago i just cant remember the answer other wise i would tell you but im sorry:( <3

Explanation:

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Ksju [112]

I'd say D none of these

8 0

2 years ago

Read 2 more answers

What do enzymes do to chemical reactions in cells?

romanna [79]

Answer:

Enzymes are homogenous, thermolabile,biological catalyst that increases the reaction rate of a chemical reaction.

Explanation:

Enzymes are used as catalyst in many biochemical reactions.Enzymes basically interact in a complementary fashion with the transition state of the reaction thus helping to decrease the energy barrier called activation energy.Thus enzymes helps to stimulate the velocity of biochemical reaction.

It is very important point to note that enzymes do not affect the reaction equilibrium.

6 0

3 years ago

To prepare 1.00 L of 14g BaCl2, what Molarity would it be?

nikklg [1K]

Answer:

0.067 M

Explanation:

Given data:

Volume of solution = 1.00 L

Mass of BaCl₂ = 14 g

Molarity of solution = ?

Solution:

Molarity is used to describe the concentration of solution. It tells how many moles are dissolve in per litter of solution.

Formula:

Molarity = number of moles of solute / L of solution

Now we will calculate the number of moles first.

Number of moles = mass/ molar mass

Number of moles = 14 g/ 208.23 g/mol

Number of moles = 0.067 mol

Now we will calculate the molarity.

Molarity = 0.067 mol / 1.00 L

Molarity = 0.067 M ( mol/L=M)

6 0

3 years ago

How many atoms are in 1 mole of cobalt atoms?

rosijanka [135]

Answer:

Explanation:

Explanation: NA,Avogadro's number specifies 6.0221×1023 individual particles. It is simply another collective number like a dozen, or a score, or a gross. NA has the property that 6.0221×1023 individual cobalt atoms has a mass of 58.93⋅g

6 0

2 years ago

Read 2 more answers

A certain metal forms a soluble sulfate salt . suppose the left half cell of a galvanic cell apparatus is filled with a solution

svp [43]

Answer:

1. The positive electrode is the one on the left

2. Ecell = 0.0582V

Note: The question is incomplete.

The complete question is given below:

A certain metal M forms a soluble sulfate salt M2SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 5.00 M solution of M2SO4 and the right half cell with a 500 mM solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 20.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits.

Explanation:

1. This is a case of a concentration cell. A concentration cell acts to dilute the more concentrated solution and concentrate the more dilute solution, creating a voltage as the cell reaches an equilibrium. This is achieved by transferring the electrons from the cell with the lower concentration to the cell with the higher concentration.

Electrons flow from the right electrode to the left electrode. Therefore, the left electrode is the positive electrode (cathode).

2. See attachment below for solutions

5 0

3 years ago