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3 years ago

Help !!!!!!! cell membrane plants information due soon

1 answer:

5 0

The cell membrane acts as a semi-permeable barrier in plants. In other words, is in charge or control of what comes in and out of the cell.

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luis set a glass of water outside in the sunshine. when he looked at the glass ten minutes later, the contents had changed. what

xeze [42]

Evaporation is the answer

6 0

4 years ago

Read 2 more answers

How much energy would be produced from the reaction of 2.40 moles hydrogen with 3.95 moles chlorine? ___ H2 + ___ Cl2 ___ HCl ΔH

True [87]

Answer:

How much energy would be produced from the reaction of 2.40 moles hydrogen with 3.95 moles chlorine?

$H_2 + Cl_2 -> 2HCl , deltaH = -554 kJ$

Explanation:

Given,

2.40 moles hydrogen reacts with 3.95 moles chlorine.

From the balanced chemical equation,

1mol. of H2 reacts with 1mol. of Cl2

then,

2.40mol. of H2 reacts with ----?mol of Cl2

$=>2.40 mol. H2 * \frac{1mol. Cl2}{1mol. H2} \\=2.40 mol. Cl2$

So, the remaining moles of Cl2 is in excess.

The limiting reagent is--- H2.

1mol. of H2 releases --- 554kJ of energy

then,

2.40mol of H2 releases ---- ?

$=>2.40mol * \frac{554kJ}{1 mol.} \\=1329.6kJ$

Answer is: deltaH =-1329.6kJ

3 0

3 years ago

True or False: A property is a way to

kenny6666 [7]

Answer:

True

Explanation:

Here is an example: chemical properties include flammability, toxicity, acidity, reactivity. we observe the changes of these properties. Therefore, It's true.

5 0

3 years ago

Arrange the ions from largest to smallest. <br><br> Se^2-, Sr^2+, As^3-, Br^-, Rb^+

nadya68 [22]

Answer:

As^3-, Se^2-, Br^-, Rb^+, Sr^2+

Explanation:

5 0

3 years ago

How do you find the limiting reactant if 2.50 mol copper and 5.50 mol silver nitrate react by single displacement?

Crank

The limiting reagent is Copper (Cu).

<u>Explanation:</u>

To identify the limiting reactant., first balance the reaction.

The balanced equation is:

Cu + 2AgNO3 -----> Cu(NO3)2 + 2Ag

To find the limiting reactant, take the amount of initial substance and find the number of moles of one of the products. The reactant that gives a product with the least number of moles, is the limiting reactant

$5.50 mol Cu \times (\frac{1.00 mol Cu}{2.00 mol AgNO3} )$ = 2.75 mol Cu.

Since there are only 2.50 mol Cu, copper is the limiting reactant, because, with that quantity of copper, only 2.50 mol AgNO3 will be reacted.

6 0

3 years ago