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3 years ago

I have to get this done fast

Chemistry

1 answer:

anastassius [24]3 years ago

7 0

Answer:

Animals would, instead of getting energy from the food that they eat like meat or plants, they would get their energy from the sun like plants do.

Explanation:

Because like what the paper says, Chloroplasts help with the photosynthesis, which is the process in which a plant gains its energy.

<h2><em>PLEASE GIVE BRAINLIEST</em></h2>

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A ball has a volume of 9.0 liters and is subjected to a pressure of 3.5 atmospheres when its temperature is 74 °C. According to

vodka [1.7K]

To determine the number of moles of the gas, we need to relate moles to pressure, temperature and volume. To simplify things, we assume the gas is ideal so we use the ideal gas equation PV=nRT.

PV = nRT
n = PV / RT
n = 3.5 (9.0) / 0.08205 (74+273.15)
n = 1.1059 mol

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4 years ago

What number of moles of O2 will be produced by the decomposition of 4.4 moles of water?

adelina 88 [10]

2.2 moles of O2 will be produced by the decomposition of 4.4 moles of water.

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4 years ago

How do you write the compound Mg3N2? Are Roman numerals included as well?

GREYUIT [131]

Answer:

It is written exactly like that; Mg3N2

Explanation:

Roman numerals are used sometimes to show the charge of an ion that can be multiple charges.

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4 years ago

At STP what is the volume of 16.34 grams of nitrogen gas?

nika2105 [10]

Answer:

Volume = 13.06 L

Explanation:

We are given: mass of nitrogren gas = 16.34 g

We know: molar mass of nitrogen gas = 28.014 g/mol

: ideal gas law constant = 0.082 L.atm/K.mol

At STP: temperature = 273.15 K

: pressure = 1 atm

We first determine the number of moles of nitrogen gas:

n = m/M

= 16.34/28.014

= 0.58 mol

Using the ideal gas law:

$\begin{gathered} PV\text{ = nRT} \\ \\ \therefore V\text{ = }\frac{nRT}{P}\text{ = }\frac{0.58\times0.082\times273.15}{1}\text{ = 13.06 L} \end{gathered}$

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1 year ago

In the early 1960s, radioactive strontium-90 was released during atmospheric testing of nuclear weapons and got into the bones o

Advocard [28]

Answer:

52.54 %

Explanation:

Half life = 29 years

$t_{1/2}=\frac {ln\ 2}{k}$