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Anton [14]
3 years ago
12

This drawing shows a human body system.

Chemistry
1 answer:
Alexxx [7]3 years ago
5 0

Answer:its A ( the transport of nutrients,water,oxygen to body cells

Explanation:

I just did it :)

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Scientists claim that climate change is happening because Earth is warming. They also claim that humans have helped cause the wa
kirill [66]
We know it’s C because of what it says in the text
3 0
3 years ago
Give an example of organic and inorganic compound
Olenka [21]
Organic: sugar
inorganic: salt
5 0
4 years ago
How many moles of a gas sample are in a 20.0 L container at 373 K and 203 kPa? The gas constant is 8.31 L−kPa/mol−K. A)0.33 mole
12345 [234]

Answer:

Option (C) 1.30 moles

Explanation:

The following data were obtained from the question:

Volume (V) = 20L

Temperature (T) = 373K

Pressure (P) = 203 kPa

Gas constant (R) = 8.31 L.kPa/mol.K.

Number of mole (n) =...?

The number of mole of the gas in the container can obtained by applying the ideal gas equation as illustrated below:

PV = nRT

Divide both side by RT

n = PV /RT

n = 203 x 20 / 8.31 x 373

n = 1.30 mole.

Therefore, 1.30 mole of the gas is present in the container.

4 0
3 years ago
4O POINTS PLEASE ANSWER
Karo-lina-s [1.5K]

Answer & Explanation:

The reason why is because global fossil fuel consumption is on the rise, and new reserves are becoming harder to find. Those that are discovered are significantly smaller than the ones that have been found in the past.

Oil: Consumption (Predictions): Over 11 Billion tonnes Annually. If we carry on as we are, our known oil deposits could run out in just over 53 years.

Gas (Predictions): If we increase gas production to fill the energy gap left by oil, our known gas reserves only give us just 52 years left.

Coal: Although it’s often claimed that we have enough coal to last hundreds of years, this doesn’t take into account the need for increased production if we run out of oil and gas, our known coal deposits could be gone in 150 years.

For example, oil reserves are a good example: 16 of the 20 largest oil fields in the world have reached peak level production – they’re simply too small to keep up with global demand.

During the year of 2015, fossil fuels made up 81.5% of total U.S. energy consumption. The number is most likely increasing every year.

(fyi: the graph provided is showing future energy reserves for coal, gas and oil. approxiamately.)

7 0
4 years ago
Help calculating molar mass
Irina-Kira [14]
Molar mass can be determined by adding the atomic masses of each individual element, depending on how many times they appear. You can find how many times they appear by looking at their respective subscripts. Atomic masses of each element can be found on the periodic table.

For example, in #1

Multiply the mass of Lithium (6.941) by 4, because there are 4 lithium molecules.

Multiple the mass of Phosphorus (30.974) by 2 because there are 2 Phosphorus molecules.

And multiply the mass of oxygen (15.999) by 7 because there are 7 oxygen molecules.

After you have those values, add them together to find the total molar mass of the compound.
7 0
3 years ago
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