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TEA [102]
3 years ago
12

Which structure of the cell controls what goes in and comes out of the cell? cell _________ Which structure is a strong layer ar

ound plant cells? cell ________
Chemistry
2 answers:
Dmitrij [34]3 years ago
8 1

Answer:

cell membrane

Explanation:

Clair
2 years ago
Your wrong I did it and its not right
masya89 [10]3 years ago
6 1

First one is cell Membrane and the second one is cell Wall

Clair
2 years ago
Your wrong I did it and its not right
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How many bonding and ione pairs does HCN have?
tiny-mole [99]
One lone pair, as there is a single covalent bond between the hydrogen and the carbon, and a triple covalent bond between the nitrogen and the carbon, leaving two free electrons/one electron pair on the nitrogen..... I think ((:
6 0
3 years ago
2 - Slimotosis
lakkis [162]
Initial observation is a nasty slime and a horrible odor.
4 0
3 years ago
If 57.0 g of b2o3 is added to 44.7 g of cl2 and 68.8 g of c, what is the theoretical yield of boron trichloride?
sdas [7]
(57.0 g B2O3 / (69.6202 g B2O3/mol) x (4mol BCI3 / 2 mol B2O3) = 1.64 mol BC13

(44.7 g C12) / (70.9064 g C12/mol) x (4mol BCI3 / 6mol C12) = 0.42027 mol BC13

(68.8 g C) / (12.01078 G C/mol) x (4mol BCI3 / 3 mol C) = 7.63 mol BCI3

C12 is the limiting reactant.

(0.42027 mol BCI3) X (117 . 170 g BCI3/mol) = 49.2 g BCI3 in theory.
6 0
3 years ago
The Henry's Law constant (kH) for carbon monoxide in water at 25°C is 9.71×10-4 mol/L·atm. How many grams of CO will dissolve in
Olegator [25]

Answer: 0.0748 grams of CO will dissolve in 1.00 L of water if the partial pressure of CO is 2.75 atm

Explanation:

Henry's law states that the amount of gas dissolved or molar solubility of gas is directly proportional to the partial pressure of the liquid.

To calculate the molar solubility, we use the equation given by Henry's law, which is:

C_{CO}=K_H\times p_{liquid}

where,

K_H = Henry's constant = 9.71\times 10^{-4}mol/L.atm

p_{CO} = partial pressure of CO = 2.75 atm

Putting values in above equation, we get:

C_{CO}=9.71\times 10^{-4}mol/L.atm\times 2.75atm\\\\C_{CO}=2.67\times 10^{-3}mol/L

C_{CO}=2.67\times 10^{-3}mol/L\times 28g/mol=0.0748g/L

Hence, the solubility of carbon monoxide gas is 0.0748 g/L

5 0
3 years ago
Write the combustion equation for propane (C3H8). What is the sum of the coefficients for the reactants and products? Group of a
lbvjy [14]

Answer:

13

Explanation:

Let's consider the unbalanced equation for the combustion of propane.

C₃H₈ + O₂ ⇒ CO₂ + H₂O

We will begin balancing H atoms by multiplying H₂O by 4.

C₃H₈ + O₂ ⇒ CO₂ + 4 H₂O

Now, we balance C atoms by multiplying CO₂ by 3.

C₃H₈ + O₂ ⇒ 3 CO₂ + 4 H₂O

Finally, we get the balanced equation multiplying O₂ by 5.

C₃H₈ + 5 O₂ ⇒ 3 CO₂ + 4 H₂O

The sum of the coefficients is 1 + 5 + 3 + 4 = 13.

8 0
3 years ago
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