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Flura [38]
3 years ago
10

i. Give two differences between a physical change and a chemical change. ii. Explain whether condensation of water vapor is a ph

ysical or a chemical change. iii. Write word equations for the following reactions: a. Breaking down/ electrolysis of water b. synthesis of water c. decomposition of sugar d. photosynthesis in plants
Chemistry
2 answers:
dalvyx [7]3 years ago
7 0

Answer:

Explanation:

1) Chemical change :

It is permanent change.

Heat or energy is given out during the process

Physical change :

It is a temporary change.

Heat or energy in not given out during the process.

2) Condensation of water vapour is a physical change.

hope this helps

plz mark it as brainliest!!!!!!!

mihalych1998 [28]3 years ago
6 0

Answer:

i. The difference between physical and chemical change is that a physical change merely changes the shape and size of the substance while a chemical change produces altogether new substance.

ii condensation of water vapour is a physical change

Explanation:

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5 0
3 years ago
A client who weighs 70 kg is receiving a solution of 0.9% sodium chloride (normal saline) 500 ml with dopamine 800 mg at 5 ml/ho
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The mcg/kg/minute the client is receiving is 1.904 mcg/kg/min whose weight is 70 kg.

<h3>What does mcg kg mean?</h3>

1 milligram (mg) = 1000 micrograms (mcg) or 0.001 grams (g) 1 g = 1000 mg 1 kilogram (kg) = 1000 g 1 kg = 2.2 pound (lb) 1 liter (L) = 1000 milliliters (mL)

The number of mcg/kg/minute = flow rate × concentration ÷ mass of client

Flow rate = 12 ml/hour = 12 ml/hour × 1 hr/60 min = 0.2 ml/min

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Calculating mcg/kg/minute

So, substituting the variables into the equation, we have

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Learn more about mcg/kg/minute here:

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