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9966 [12]
3 years ago
12

All cell activity is controlled by the A. nucleus

Chemistry
2 answers:
Lelu [443]3 years ago
8 0

Answer:

A

Explanation:

how I know this I am very smart I know everything

tangare [24]3 years ago
3 0

Answer:

A

Explanation:

it also stores all the cells dna

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Relationship between the variables of Pressure and Temperature of a gas?
pychu [463]

Answer:

The pressure of a given amount of gas is directly proportional to iys absolute temperature provided that that the volume does not change

7 0
3 years ago
Question
deff fn [24]

Answer:

The volume of the gas is 0.015 m^3.

Explanation:

mass, m = 32 g

Temperature, T = 45 °C = 45 + 273 = 318 K

Pressure, P = 728 mm of hg = 0.728 x 13.6 x 1000 x 9.8 = 97027.84 Pa

Atomic mass = 4 x 12 + 10 x 1 = 58 g

Use the ideal gas equation

Let the volume is V.

P V = n R T

97027.8 \times V = \frac{32}{58}\times 8.31 \times 318 \\\\V = 0.015 m^3  

6 0
3 years ago
Read 2 more answers
How many grams of H2O will be formed when 32.0 g H2 is mixed with 84.0 g of O2 and allowed to react to form water
adell [148]

Answer:

94.57 g H2O

Explanation:

32.0 g H2

Molar Mass H2: 2.01 g/mol

84.0 g O2

Molar Mass O2: 32.00 g/mol

Molar Mass H2O: 18.02 g/mol

First balance the eqution:

2H2 + O2 = 2H2O

Find the amount of moles that both 32.0 g of H2 and 84.0 g of O2 can produce using the molar masses:

32.0 g H2 x ((1 mole H2)/ (2.015 g H2)) = 15.88 moles H2

84.0 g O2 x ((1 mole O2)/(32.00 g O2)) = 2.63 moles O2

Now you can find the amount of grams of H2O each reactant will produce:

**keep in mind of mole ratios from balanced equation**

15.88 moles H2 x ((2 moles H2O)/(2 moles H2)) x ((18.015 g H2O)/(1 mole H2O) =286.07 g H2O

2.63 moles O2 x ((2 moles H2O)/(1 mole O2)) x ((18.015 g H2O)/(1 mole H2O) = 94.76 g H2O

94.76 is the final answer because this is the limiting reactant, meaning it produces less product than the H2 so it limits the reaction from producing anymore product from the amount calculated.

5 0
3 years ago
Symbiosis is an interaction between two different organisms living in close physical association. The relationship between fleas
tresset_1 [31]

Answer:

the relationship between fleas and a dog is a parasitic relationship.

5 0
3 years ago
1.80x1024 molecules of CO2 is equal to how many grams?
olga nikolaevna [1]

Answer:

131.5177 grams

Explanation:

You divide by Avogadro's number to turn it into moles then multiply by molar mass.

7 0
3 years ago
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