All categories

3 years ago

What does RNA do?

Chemistry

2 answers:

MariettaO [177]3 years ago

7 0

Answer:

b, its a polymer that translates genetic information.

kondaur [170]3 years ago

4 0

The answer would be B

You might be interested in

Which two parts of sedimentary rock formation include the breakdown and carrying away of existing rock?

Rzqust [24]

erosion and weathering.

erosion as in breaking it down, weathering is also a cause of erosion, but in the case of rain, it would carry away the remaining sediments.

3 0

3 years ago

Read 2 more answers

PLEASE PLEASE HELP 1. Using a neutral atom that has an atomic number of 28 and a mass number of 152, how many protons, electrons

vampirchik [111]

Answer:

The answer to your question is:

Explanation:

Data

Atomic number = Z = 28

Mass number = A = 152

Atomic number number = # of protons

Mass number = # of protons + # of neutrons

Then

Protons = 28

Electrons = 28

Neutrons = 152 - 28 = 124

7 0

3 years ago

Combustion of hydrocarbons such as propane ( C3H8 ) produces carbon dioxide, a "greenhouse gas." Greenhouse gases in the Earth's

Naddika [18.5K]

Answer:

1. C₃H₈(g) + 5O₂ (g) → 3CO₂ (g) + 4H₂O (g)

2. The volume of CO₂ produced is 238 l.

Explanation:

Hi there!

The chemical equation is the following:

C₃H₈(g) + 5O₂ (g) → 3CO₂ (g) + 4H₂O (g)

The molar mass of propane is calculated as follows:

mass of 1 mol carbon = 12 g

mass of 1 mol hydrogen = 1 g

mass of 1 mol propane 3 · (12 g) + 8 · (1 g) = 44 g

If we have 150 g of propane, we will have (150 g · 1 mol / 44 g) 3.4 mol propane.

Looking at the chemical equation, notice that 1 mol propane produces 3 mol CO₂. Then 3.4 mol of propane will produce:

(3.4 mol C₃H₈ · 3 mol CO₂ / mol C₃H₈ ) 10.2 mol CO₂

Using the Ideal Gas Law we can obtain the volume of CO₂ produced:

P · V = n · R · T

Where:

P = pressure.

V = volume

n = number of moles.

R = gas constant (0.082 atm · l / ( K · mol))

T = temperature in kelvin.

V = n · R · T / P

V = 10.2 mol · 0.082 atm · l/ (K mol) · 285 K / 1 atm

Notice that 12 °C = 273 + 12 = 285 K

V = 238 l

The volume of CO₂ produced is 238 l.

Have a nice day!

7 0

4 years ago

Which equation agrees with the ideal gas law?

photoshop1234 [79]

<span> $\frac{(P1)(V1)}{T1}=\frac{(P2)(V2)}{T2}$ is directly related to the ideal gas law.

The ideal gas law states that: $PV=nRT$ . Rewriting this gives: $\frac{PV}{T}=nR$ . R is the universal gas constant, so its value is fixed. For a given sample, n is the number of moles of the gas, so its value would be fixed too. This means that the value of $\frac{PV}{T}$ would be a fixed constant as well. Therefore, whatever the initial value $\frac{(P1)(V1)}{T1}$ is, it should be equal to the final value $\frac{(P2)(V2)}{T2}$ .</span>

6 0

3 years ago

Read 2 more answers

Fill in the blanks with the correct words.

bearhunter [10]

Diffusion is the movement of a solute from an area of its high concentration to an area of its low concentration – i.e. down a concentration gradient. This process is “passive” – i.e. it requires no energy; the gradient is enough to drive the process.

7 0

3 years ago

Read 2 more answers