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mojhsa [17]
3 years ago
15

Objects that can bew seen only under magnification

Chemistry
1 answer:
timofeeve [1]3 years ago
4 0
The answer is (D) microscopic. You can remember this, because the name is very close to "microscope," an instrument used to greatly magnify and observe tiny organisms and objects.
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In your own words, describe a pure substance. How can elements as well as compounds be considered pure substances.
Marizza181 [45]

Answer:

Pure compounds include elements and compounds where a combination of two or more pure substances is a mixture. Only one type of atom comes in the form of a pure element. Multiple atoms consist of a molecule and different atoms consist of a compound. These are all pure substances and individually.

8 0
3 years ago
How many moles of oxygen (O2) are present in 33.6 L of the gas at 1 atm and 0°C?
maw [93]

Answer: 1.5

Explanation:

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3 0
3 years ago
What is exothermic and endothermic? How do they differ?
BabaBlast [244]
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6 0
3 years ago
How many moles of water can be formed from 0.57 moles of hydrogen gas?
BartSMP [9]

Answer:

0.57 water

Explanation:

To solve this problem, we need to write the reaction expression first.

The reactants are oxygen gas and hydrogen gas.

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Given that;

Number of moles of hydrogen gas = 0.57moles

From the balanced reaction expression;

       2 moles of hydrogen gas produces 2 moles of water

   So;

    0.57mole of hydrogen gas will also produce 0.57 water

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