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4 years ago

Most electricity is generated by

1 answer:

4 0

Electricity is most often generated at a power station by electromechanical generators, primarily driven by heat engines fueled by combustion or nuclear fission but also by other means such as the kinetic energy of flowing water and wind. Other energy sources include solar photovoltaics and geothermal power. You Mathematical Anser Would Be A

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Ali runs a paper chromatography experiment using the same ink, but three different solvents. Solvent A separates the components

Harrizon [31]

the correct answer is b

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3 years ago

Given the reaction:

olchik [2.2K]

Answer:

Option C. 200mL

Explanation:

We'll begin by writing the balanced equation for the reaction. This is illustrated below:

2NaOH + H2SO4 –> Na2SO4 + 2H2O

From the balanced equation above,

The mole ratio of the acid (nA) = 1

The mole ratio of the base (nB) = 2

The following data were obtained from the question:

Molarity of the base (Mb) = 1M

Volume of the base (Vb) =..?

Molarity of the acid (Ma) = 1M

Volume of the acid (Va) = 100mL

The volume of the base needed can be obtained as follow:

MaVa/MbVb = nA/nB

1 x 100 /1 xVb = 1/2

Cross multiply to express in linear form

Vb = 1 x 100 x 2

Vb = 200mL

Therefore, the volume of the base needed for the reaction is 200mL

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3 years ago

A mixture contains 1 gram of salt and 2 grams of sugar dissolved in 100 grams of water. Which other mixture would most likely ha

olga_2 [115]

4 grams of salt, 8 grams of sugar, and 400 grams of water

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4 years ago

What is the relation between concentration of reactants and the rate of chemical reaction?

Lynna [10]

Reaction rates can be increased if the concentration of reactants is raised. An increase in concentration produces more collisions. The chances of an effective collision goes up with the increase in concentration. The exact relationship between reaction rate and concentration depends on the reaction "mechanism".

4 0

4 years ago

Read this article about arctic warming, and then answer the following questions. Summarize the main idea of the article. What do

docker41 [41]

Answer: The author wrote the article to show another possible effect of climate change, even though the mechanism behind these heat waves is not completely understood yet.

Explanation: Sample answer from Edmentum.

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3 years ago

Read 2 more answers