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3 years ago

Which of these statements explains the relationship among elements, compounds, and mixtures?

1 answer:

6 0

A compound is where two or more elements have chemically bonded, and a mixture is where there are two or more elements are grouped together, but they are not chemically bonded.
An example of a mixture would be salt dissolved in water, and an example of a compound would be water (which is made up of 2 Hydrogen and 1 Oxygen bonded together)

tl;dr: I would go with B, basically.

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Whats 0.06 in scientific notations

melomori [17]

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimalplaces you move will be the exponent on the 10 . If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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3 years ago

How does catalysts make its way to common usage?

Vadim26 [7]

A catalyst affects a chemical reaction by accelerating it. It also offers an alternative way for the reaction to happen that lowers the amount of energy needed.

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3 years ago

In the table, record the temperature of each thermometer every 2 minutes for the first 10 minutes. Then record the temperature e

Arada [10]

Answer:

Explanation: found on brainly

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2 years ago

How would a solution that is labeled 5.0 M would be read as?

cestrela7 [59]

The M stands for molar, so it would be 5.0 molar. is that what you need?

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3 years ago

What volume of 0.200 M ethanol solution contains each of the following amounts?

Papessa [141]

Answer:

A. 2.3 L

B. 6.10 L

C. 0.060 L

Explanation:

The question asks the volume of a 0.200 M solution of ethanol that contains certain number of moles of ethanol.

The M in the 0.200 M stands for Molarity. This is a unit of concentration that can be expressed as:

Molarity = moles of solute / Liters of solution

In this case:

0.200 M = moles of ethanol / Liters of solution

So from the formula we can get that we can calculate the volume of the solution, as Liters of solution, given the moles in each case as:

Liters of solution = moles of ethanol / 0.200 moles/L

_______________________________________________

A. 0.45 mol ethanol

Liters of solution = 0.45 moles / 0.200 moles/L = 2.25 L = 2.3 L

B. 1.22 mol ethanol

Liters of solution = 1.22 moles / 0.200 moles/L = 6.10 L

C. 1.2 x 10⁻² mol ethanol

Liters of solution = 1.2 x 10⁻² moles / 0.200 moles/L = 0.060 L

_______________________________________________

Note: Each answer is given with the correct number of significant figures which results from the least number of significant figures in the given used values in each calculation.

7 0

3 years ago