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Fed [463]
3 years ago
5

Short structures that cover the outside of some protists and help them move are called what?

Chemistry
1 answer:
sashaice [31]3 years ago
7 0
Cilia is the answer i think , sorry if i am wrong
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Which of the following elements has the highest electronegativity?
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Answer: is c

Explanation:

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3 years ago
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A chemist prepares a solution of potassium dichromate by measuring out of potassium dichromate into a volumetric flask and filli
riadik2000 [5.3K]

Answer:

0.297 mol/L

Explanation:

<em>A chemist prepares a solution of potassium dichromate by measuring out 13.1 g of potassium dichromate into a 150 mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's potassium dichromate solution. Be sure your answer has the correct number of significant digits.</em>

<em />

Step 1: Calculate the moles corresponding to 13.1 g of potassium dichromate

The molar mass of potassium dichromate is 294.19 g/mol.

13.1 g × (1 mol/294.19 g) = 0.0445 mol

Step 2: Convert the volume of solution to L

We will use the relationship 1 L = 1000 mL.

150 mL × (1 L/1000 mL) = 0.150 L

Step 3: Calculate the concentration of the solution in mol/L

C = 0.0445 mol/0.150 L = 0.297 mol/L

4 0
2 years ago
Which statement describes the energy changes that occur as bonds are broken and formed during a chemical reaction? 1.Energy is a
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Answer:

C

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Br + Br-> Br2 (covalent bond)

bond formation releases energy, as the Br's are in a lower energy state like Br2

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What volume of a 0.200 M HCI solution is needed to neutralize 25.0 L of a 0.250 M NaOH solution? Follow these steps
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Answer: A little bit confused can you explain what I have to do

Explanation:

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2 years ago
How can we tell when something is polar or non-polar in an Inter-molecular Force?
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If the substance mixes with water it's polar. If it doesn't it ms non polar.
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