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2 years ago

13

What is the main source of energy in a clear water stream in an open area

2 answers:

solniwko [45]2 years ago

4 0

Answer:

c.sunlight

Explanation:

Dmitry_Shevchenko [17]2 years ago

3 0

Answer:C) Sunlight

Explanation:

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What is wrong with the statement below?

pychu [463]

All chemicals can cause harm. When only a very large amount of the chemical can cause damage, the chemical is considered to be practically non-toxic. When a tiny amount is harmful, the chemical is considered to be highly toxic.

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2 years ago

How many oxygen atoms are in 2(NO3)

torisob [31]

6 Oxygen atoms

Explanation:

In the molecule 2(NO₃):

An atom is the smallest indivisible particle of any substance. They chemically combine to give compounds and molecules. Some of them are able to exist on their own.

An element is a substance that has a unique atom.

NO₃ has two elements: N and O

Number of atoms:

N = 1

O = 3

but we have two moles of NO₃

O = 3 x 2 = 6

N = 1 x 2 = 2

learn more:

Number of atoms brainly.com/question/10419836

#learnwithBrainly

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2 years ago

Whatvdo you meant by acid and base

larisa86 [58]

Answer:

e meri a

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Application software is a software which performs special task for user

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2 years ago

Read 2 more answers

According to the following reaction, how many grams of potassium sulfate will be formed upon the complete reaction of 23.8 grams

Alexxandr [17]

<u>Answer:</u> The mass of potassium sulfate that can be produced is 73.88 grams

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

<u>For KOH:</u>

Given mass of KOH = 23.8 g

Molar mass of KOH = 56.1 g/mol

Putting values in equation 1, we get:

$\text{Moles of KOH}=\frac{23.8g}{56.1g/mol}=0.424mol$

The chemical equation for the reaction of KOH and potassium hydrogen sulfate follows:

$KHSO_4+KOH\rightarrow K_2SO_4+H_2O$

As, potassium hydrogen sulfate is present in excess. It is considered as an excess reagent.

KOH is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

1 mole of KOH produces 1 mole of potassium sulfate

So, 0.424 moles of KOH will produce = $\frac{1}{1}\times 0.424=0.424moles$ of potassium sulfate

Now, calculating the mass of potassium sulfate from equation 1, we get:

Molar mass of potassium sulfate = 174.26 g/mol

Moles of potassium sulfate = 0.424 moles

Putting values in equation 1, we get:

$0.424mol=\frac{\text{Mass of potassium sulfate}}{174.26g/mol}\\\\\text{Mass of potassium sulfate}=(0.424mol\times 174.26g/mol)=73.88g$

Hence, the mass of potassium sulfate that can be produced is 73.88 grams

8 0

3 years ago

As the ph ________, the concentration of hydrogen ions increases, and the solution becomes ____________.

Sauron [17]

As the ph Decreases, the concentration of hydrogen ions increases,and the solution becomes acidic.

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2 years ago