Which molecules are used to produce energy

A sample of gas occupies 10 L at STP. What

puteri [66]

Pressure is 5.7 atm

Explanation:

P1 = Standard pressure = 1 atm

P2 = ?

V1 = Volume = 10L

V2= 2.4L

T1 = 0°C + 273 K = 273 K

T2 = 100°C + 273 K = 373 K

We have to find the pressure of the gas, by using the gas formula as,

$$\frac{P 1 V 1}{T 1}=\frac{P 2 V 2}{T 2}$

P2 can be found by rewriting the above expression as,

$$P 2=\frac{P 1 \times V 1 \times T 2}{T 1 \times V 2}$

Plugin the above values as,

$$P 2=\frac{1 \text {atm} \times 10 L \times 373 \mathrm{K}}{273 \mathrm{K} \times 2.4 \mathrm{L}}=5.7 \text { atm }$

4 0

3 years ago

Select the correct answer. Which scientist performed the cathode ray experiment leading to the discovery of electrons? A. Dalton

MrRa [10]

Hi,
The answer should be letter E, Thomson.

4 0

3 years ago

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The periodic table has undergone some changes since it was first introduced. List three ways the modern periodic table differs f

Hoochie [10]

One of the differences I can think of is that hydrogen is no longer listed as a group I element.

According to the mendeleev tables that I looked up, hydrogen is catorgrized as a group I element, along with Lithium, sodium, Potassium etc. However, nowadays, hydrogen does not belong to any groups in the periodic table. This is because there are arguments about whether hydrogen belongs to group I. Group I elements are all alkali metals, while hydrogen is not. However, some people says that hydrogen only have one outer shell electron so it should be in group I. Some people even say hydrogen should belong to group VII because it only needs one more electron in order to achieve the duplet of electrons.

Therefore as you may notice, hydrogen in modern periodic tables are put in the center of the periodic table on the top.

6 0

3 years ago

Consider two gases—oxygen and nitrogen at STP. How will the kinetic energy of the gases be affected if we only increase the temp

alex41 [277]

The correct option is this: OXYGEN WILL HAVE MORE KINETIC ENERGY THAN NITROGEN.

Increasing the temperature of oxygen requires the application of heat. The heat energy that is applied to the gas will make the particles of the oxygen gas to gain more kinetic energy and to move more rapidly than before, by so doing, the particles will colloid more with one another and with the wall of the container. The kinetic energy of the particles of the nitrogen gas will remain the same since its temperature was not affected.

3 0

3 years ago

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Please help due tonight

andre [41]

Answer:

, CaCO3, contains one atom of calcium, one of carbon and three of oxygen. so there are 5 atoms in CaCO3

Mg(OH)2, There is one magnesium, two oxygen, and two hydrogen atoms. so there are 5 atoms Mg(OH)2

a molecule of acetic acid contains two carbon atoms, four hydrogen atoms, and two oxygen atoms. so there are 8 atoms in acetic acid

There are 3 atoms in CaCl2

H2SO4 is a chemical compound made up of two hydrogen atom, one sulfer atom, and four oxygen atoms. So there are 7 atoms in H2SO4

There are 8 atoms in sodium phosphate

Explanation:

5 0

3 years ago

Which molecules are used to produce energy​

Which molecules are used to produce energy