help pls i give twenty points and brainlist

Answer:

5542.37 K

Explanation:

Given that,

Initial volume, V₁ = 590 mL

Initial temperature, T₁ = -55°C = -55 + 273 = 218 K

Final volume, V₂ = 15 L

We need to find the final temperature of the gas. The relation between the volume and the temperature is given by :

[tex]\dfrac{V_1}{T_1}=\dfrac{V_2}{T_2}[/tex]

Where

T₂ is final volume of the gas

Put all the values in above relation,

[tex]T_2=\dfrac{V_2T_1}{V_1}\\\\T_2=\dfrac{15\ L\times 218\ K}{590\times 10^{-3}\ L}\\\\T_2=5542.37\ K[/tex]

So, the required temperature is equal to 5542.37 K.

Explanation:

Water is called the "universal solvent" because it is capable of dissolving more substances than any other liquid. This is important to every living thing on earth. It means that wherever water goes, either through the air, the ground, or through our bodies, it takes along valuable chemicals, minerals, and nutrients.

Answer:

I agree with Omar because it depends on what the charge of the object and magnet is. If the magnet is negative and the object is positive, they will pull together. If the magnet is negative and the object is negative then they will pull apart.

Explanation:

Answer:

1.61 atm

Explanation:

Using general gas law equation as follows:

PV = nRT

Where;

P = pressure (atm)

V = volume (L)

n = number of moles (mol)

R = gas law constant (0.0821 Latm/molK)

T = temperature (K)

From the information provided in this question,

V = 5.00L

T = 350K

mass of O2 = 9.00g

Using mole = mass/molar mass

Molar mass of O2 = 16(2) = 32g/mol

mole = 9/32

mole = 0.28mol

Using PV = nRT

P = nRT/V

P = 0.28 × 0.0821 × 350/5

P = 8.0458/5

P = 1.609

Pressure = 1.61 atm

The pressure of the oxygen gas at the given temperature and volume is 1.61 atm.

The given parameters;

The number of the moles of the given gas is calculated as follows;

[tex]moles = \frac{m}{M} \\\\moles = \frac{9}{32} \\\\moles = 0.28 \ mol[/tex]

The pressure of the gas is calculated as follows;

[tex]PV = nRT\\\\P = \frac{nRT}{V} \\\\P = \frac{0.28 \times 0.0821 \times 350}{5} \\\\P = 1.61 \ atm[/tex]

Thus, the pressure of the oxygen gas at the given temperature and volume is 1.61 atm.

Learn more here:https://brainly.com/question/21912477

Answer:

there are 1.4201927800478769 moles in 83 particles of sodium chloride. or 1.42 for short.

Explanation:

Answer:

C) Carbon dioxide is the answer.

Answer:

C. Carbon Dioxide

Carbon is absorbed by plants and chemically converted to oxygen via photosynthsis.

Hope this helps!

Answer:

87.15%

Explanation:

To find percent yield, we can use this simple equation

[tex]\frac{Actual}{Theoretical} *100[/tex]

Where "Actual" is the amount in grams actually collected from the reaction, and "Theoretical" is, well, the theoretical amount that should have been produced.

They give us these values, so to find the percent yield, just plug the numbers in.

[tex]\frac{30.85}{35.40} *100\\\\ =87.15[/tex]

So, the percent yield is 87.15%

An easy trick to remember how to do this is just to divide the smaller number by the bigger number and move the decimal back two places. If you have a percent yield greater than 100%, something is wrong in the reaction.

conduction is the transfer of energy by the movement of currents(it is true)

Answer:

false

Explanation: Its actually Convection

Answer:

I think the answer is All of these ions

Answer:

the answer is very correct as AgNO3 and Cu(NO3)2

Answer:

A,C

Explanation:

the person above me is correct

Answer:

o He

Explanation:

basyshsiz0qnshshhsjzz

Answer:

I don't know what the passage says, but I feel like the most logical conclusion is D or the last one.

Explanation:

Answer:

D! Hope this helps! Figured id help with all of ur questions!

Explanation:

Im a wiz at science! ;)

Answer:

Ununoctium

Explanation:

It's at the very end of the periodic table

Answer:

Ununoctium

Explanation:

Ununoctium is the last chemical element int the periodic table.

Answer:

2

Explanation:

Answer:6.7892 meters

Explanation:

Answer:

the oxidation number of hydrogen is +2, while oxygen is -2

Answer:

Harmful toxins from crops have been found in peoples blood.

GM crops can cause allergic reactions in crops

Its dangerous to mess with nature this way when it should be a natural thing.

Explanation:

I'm in both Biology and Chemistry so I know a lot!

Answer:

3.5

Explanation:

500*0.175= 8.75 *40/1000=3500/1000=3.5

Answer:

3.50 grams

Explanation:

Mastering chem

Answer:

[tex]\boxed {\boxed {\sf Different \ amount \ of \ protons, neutrons, \ and \ electrons}}[/tex]

Explanation:

Remember that a mole is equal to Avogadro's number: 6.022*10²³ atoms. Also, remember that an atom is made up of protons, neutrons, and electrons. Each element has a different amount of each.

If an element has more of these particles in 1 atom, then the atomic mass will be greater, ultimately making the molar mass (mass of 1 mole) greater.

Silicon has 14 protons, electrons, and neutrons, making its atomic mass 28.085 amu and its molar mass 28.085 grams. However, carbon only has 6 of each particle, so its atomic mass is smaller at 12.011 amu and molar mass is 12.011 grams.

Answer:

3rd statment

Explanation:

ray 1 and 2 are same vertical line

Answer: C:  Ray 1 and Ray 2 make the same angle with the vertical line.

Explanation:

Answer:

none of the above

Explanation:

Answer:

an ecosystem

Explanation:

it compromises of living and non living things in an environment.