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fredd [130]
3 years ago
12

Explain the environmental benefits of recyling paper products.

Chemistry
1 answer:
jenyasd209 [6]3 years ago
5 0

Answer:

hi

Explanation:

bye

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Which of the following is an example of a micro-habitat?
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I believe it is d, a microhabitat is a small area which differs somehow from the surrounding habitat. Its unique conditions may be home to unique species that may not be found in the larger region.
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3 years ago
Select the correct answer. Which is true according to the law of conservation of energy? A. In a closed system, the total amount
mojhsa [17]

in the image there is answer okk

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2 years ago
If you drop a 50 gram piece of metal with a temperature of 125° Celsius into 1000 grams of water at 20° Celsius, what best descr
Nostrana [21]
Dropping a 50 gram piece of metal with a temperature of 125° Celsius into 1000 grams of water at 20° Celsius would lead to a heat loss by the metal and an heat gain by the water. These loss and gain should be equal since energy cannot be created nor destroyed.
3 0
3 years ago
Please help me please
Roman55 [17]

Answer:

Explanation:

Molarity = moles / volume (L)

moles = mass (g) / Molecular weight (g/mol)

so you have mass in gram and volume in ml ( Volume must be in litter because unit of mass is gram )

g = L     ,   mg = ml

first you must calculate the number of moles for each molecule and convert the ml to L and use the molarity law to calculate molarity for each molecule .

Ex71.

a.   Mw for NaCl = 23+35 = 58 g/mole

no of moles = 1.5 / 58 = 0.025

ml to L = 100/1000 = 0.1 L

Molarity = 0.025 / 0.1 = 0.25 M

b. Mw for K2CrO4 = 39x2 + 52 + 16x4 = 194 g/mol

no of moles = 1.5 / 194 = 0.0077

ml to L = 100 / 1000 = 0.1 L

Molarity = 0.0077 / 0.1 = 0.077 M

----------------------------------------------

Ex 72

a.  Mw for MgBr = 24 + 80 = 104 g/mol

no of moles = 20 / 104 = 0.19

ml to L = 250 / 1000 = 0.25 L

Molarity = 0.19 / 0.25 = 0.76 M

b. Mw for LiCO = 7 + 12 + 16 = 35 g/mol

no of moles = 5.55 / 35 = 0.158 moles

ml to L = 75 / 1000 = 0.075 L

Molarity = 0.158 / 0.075 = 2.106 M

Good Luck

3 0
3 years ago
To cook food, a microwave oven converts electrical energy into ________ energy. A) electromagnetic B) heat C) mechanical D) nucl
Mariana [72]

Answer: Option (B) is the correct answer.

Explanation:

When we heat food in a microwave then the electrical energy of microwave produces microwaves which are also part of electromagnetic spectrum.

These microwaves are absorbed by food and as a result microwaves change into heat energy. Therefore, food becomes hot.

Thus, we can conclude that to cook food, a microwave oven converts electrical energy into heat energy.

7 0
3 years ago
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