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3 years ago

All objects in space obey the law of ________.

Chemistry

1 answer:

Lera25 [3.4K]3 years ago

7 0

Answer:

physics, including the laws of gravity

Explanation:

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Heat transfer by radiation is a good example by which of the following.

Savatey [412]

Some common examples of Radiation are Ultraviolet light from the sun, heat from a stove burner, visible light from a candle, x-rays from an x-ray machine. ... This form of energy transfer is the radiation of heat. Our sun is the major source of heat energy.

6 0

3 years ago

A horse was 6,200 meters north of a barn. For 22.5 minutes, the horse ran toward the barn at 152 meters per minute. In that time

lutik1710 [3]

3420‬m

Explanation:

Given parameters:

Length of path = 6200m

time taken for the horse to run = 22.5min

speed = 152meters/minute

Unknown:

Distance run by the horse = ?

Solution:

Speed is the rate of change of distance with time.

Speed = $\frac{distance}{time}$

Distance = speed x time

Distance = 152 x 22.5 = 3420‬m

learn more:

Speed brainly.com/question/5424148

#learnwithBrainly

6 0

4 years ago

Why isn't energy ever truly destroyed?

lakkis [162]

Answer:

In physics, the law of conservation of energy states that the total energy of an isolated system cannot change—it is said to be conserved over time. ... Energy can be neither created nor destroyed, but can change form; for instance, chemical energy can be converted to kinetic energy.

Explanation:

8 0

3 years ago

Read 2 more answers

The chemical that acts as a catalyst in the photosynthesis process is

Marta_Voda [28]

Answer:

chlorophyll

Explanation:

The work of chlorophyll is to absorb light energy from sunlight and transfer it to other molecules used for a process of photosynthesis. This energy is utilized in synthesize carbohydrates using CO2. Further, it also doesn't use in a reaction of photosynthesis hence it acts as the catalyst in this reaction.

6 0

4 years ago

Electrolysis of water occurs according to the following equation...

MaRussiya [10]

Answer:

11.1g

Explanation:

Given parameters:

Mass of water = 100g

Unknown:

Mass of hydrogen gas = ?

Solution:

We need to write the balanced reaction equation first and solve from the known to the unknown;

2H₂O → 2H₂ + O₂

Now, find the number of moles of the given specie;

Number of moles of H₂O = $\frac{mass}{molar mass}$

Molar mass of H₂O = 2(1) + 16 = 18g/mol

Number of moles = $\frac{100}{18}$ = 5.56mol

2 mole of water produced 2 mole of hydrogen gas;

5.56 mole of water will produce 5.56 mole of hydrogen gas

Mass of hydrogen gas = number of moles x molar mass

molar mass = 2(1) = 2g/mol

Mass of hydrogen gas = 2(5.56) = 11.1g

3 0

3 years ago