All categories

2 years ago

Help plz! im not understanding

Chemistry

1 answer:

valina [46]2 years ago

4 0

a is 8.46 × 10^5

b is 3 ×10^-2

Explanation:

i hope this helps

You might be interested in

Emission of which one of the following leaves both atomic number and mass number unchanged?

Alecsey [184]

Answer: Gamma Radiation

Explanation:

The emission of Gamma rays does not cause a change in both the atomic and mass number. They are electromagnetic radiation.

4 0

3 years ago

Convection _____.

givi [52]

occurs in fluids

Explanation:

Convection is a mode of heat transfer that occurs in fluids.

There are three types of heat transfer:

conduction convection and radiation

Conduction is a mode of heat transfer that involves an actual contact between the molecules of the medium. It occurs mostly in solids
Radiation uses electromagnetic waves to transfer heat between two bodies or places. It does not require a material medium. The heat of the sun reaches us by radiation.
Convection is a mode of heat transfer in fluids. It involves the density differences between hot and cold liquids and gases.
Water boils by convection currents.

learn more:

Sun's energy brainly.com/question/1140127

#learnwithBrainly

6 0

3 years ago

Read 2 more answers

If a 3 kg moon rock is moved from the moon to the earth does the mass of the rock change

sukhopar [10]

Answer:

No, only the wiehgt, because the gravitational pull on the two, are diffrent. 3kg on the moon may be 6kg here on earth. but in the end, the rock still holds however much rock it held in the begining.

Explanation:

4 0

3 years ago

Explain in your own words the process using the following key words: carbon-di-oxide, water, sugar, oxygen, thylakoid, chloropla

AleksAgata [21]

Answer:

The Photosynthesis process

Explanation:

Plants, algae, and some other organisms can transform the sunlight energy into chemical energy. The photosynthesis process occur thanks to the chloroplasts. The chloroplast is an organelle found in all green plants. Inside of the chloroplast you can find the thylakoids which are arranged in stacks named grana, they have membranes with chloropyll a photosynthetic pigment, also you can find the photosystems, they are functional and structural units of protein complexes. The thylakoids capture the light and allow the reactions to transform CO2. The set of reactions that occurs in the chloroplasts are known as the Calvin cycle.

The general equation of photosynthesis is:

$6 CO_{2} + 6 H_{2} O + Energy -> C_{6} H_{12} 12O_{6} + 6 O_{2}$

6 CO2 + 6 H2O + Energy -> C6H12O6 + 6 O2

Carbon Dioxide + water + Light -> Glucose (sugar) + Oxygen

After, this glucose is transformed into pyruvate, and it allowed the release of denosine triphosphate (ATP) by cellular respiration. The ATP is an organic chemical that is requires for the cell to perform any process (any kind or work).

5 0

3 years ago

a chemical reaction produced 2.50 moles of nitrogen gas. what volume in liters, does this gas sample occupy at STP? (show your w

Harrizon [31]

The volume of N₂ at STP=56 L

<h3>Further explanation</h3>

Given

2.5 moles of N₂

Required

The volume of the gas

Solution

Conditions at T 0 ° C and P 1 atm are stated by STP (Standard Temperature and Pressure). At STP, the volume per mole of gas or the molar volume-Vm is 22.4 liters/mol.

So for 2.5 moles gas :

$\tt 2.5\times 22.4=56~L$

5 0

2 years ago