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4 years ago

16. Nuclear decay is a random event and

Chemistry

1 answer:

12345 [234]4 years ago

4 0

Answer:

A. Is independent of other energy influences

Explanation:

Nuclear decay occurs at a constant rate. The rate of decay is independent of temperature.

B, C, and D are wrong. The decay rate cannot be sped up or slowed down at ordinary temperatures.

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A balloon is inflated to a volume of 5.0 liters at 0.98atm and 25c and taken on world adventures: in an aireplane cabin, the pre

alekssr [168]

Answer:

6.37 L

Explanation:

- Used combined gas law. Get rid of temperature since it is constant. (You could also keep it and get the same answer, but it is another step)

- Change C to K

- Change torr to atm

- Hope this helps! I would be glad to give you a step by step explanation. Please let me know if you want help on how to do these types of problems.

5 0

3 years ago

What is the limiting reactant when 5.6 moles of aluminum react with 6.2 moles of water?

Arlecino [84]

here we have to choose the limiting reactant in the given unbalanced reaction.

The 5.6 moles of aluminum will be the limiting reactant in this reaction.

The reagent or reactant which is totally consume in a reaction is called the limiting reagent or reactant.

The unbalanced reaction is Al + H₂O → Al₂O₃ + H₂

On balancing 2Al + 3H₂O = Al₂O₃ + 3H₂

As we can see that 2 moles of aluminium (Al) reacts with 3 moles of water (H₂O). Thus 5.6 moles of Al reacts with $\frac{2}{3}$ ×5.6 = 3.733 moles of water.

Henceforth the 5.6 moles aluminum will be the limiting reactant as it is totally consume, but only 3.733 moles of water is reacting and the rest 6.2 - 3.733 = 2.467 moles of water will remain excess in this reaction.

Thus the aluminum will be the limiting reactant.

6 0

3 years ago

HELP JESUS CHRIST PLEASE ASAP

Kryger [21]

Answer:

What is a Metal ? Metals. Metals are opaque, lustrous elements that are good conductors of heat and electricity. Most metals are malleable and ductile and are, in general, denser than the other elemental substances.

Explanation:

Metalloid, in chemistry, an imprecise term used to describe a chemical element that forms a simple substance having properties intermediate between those of a typical metal and a typical nonmetal. ...

Definition: The non-metals are elements on the right of the periodic table

6 0

3 years ago

Consider the hypothetical reaction A(g)←→2B(g). A flask is charged with 0.77 atm of pure A, after which it is allowed to reach e

ankoles [38]

Answer:

For A: The total pressure in the flask at equilibrium is 1.19 atm

For B: The value of $K_p$ for the given equation is 2.016

Explanation:

We are given:

Initial partial pressure of A = 0.77 atm

Equilibrium partial pressure of A = 0.35 atm

For A:

For the given chemical equation:

$A(g)\rightleftharpoons 2B(g)$

Initial: 0.77

At eqllm: 0.77-x 2x

Evaluating the value of 'x'

$\Rightarrow (0.77-x)=0.35\\\\x=0.42$

Equilibrium partial pressure of B = 2x = (2 × 0.42) = 0.84 atm

Total pressure in the flask at equilibrium = $p^A_{eq}+p^b_{eq}=[0.35+0.84]atm=1.19atm$

Hence, the total pressure in the flask at equilibrium is 1.19 atm

For B:

The expression of $K_p$ for given equation follows:

$K_p=\frac{(p_B)^2}{p_A}$

Putting values in above expression, we get:

$K_p=\frac{(0.84)^2}{0.35}\\\\K_p=2.016$

Hence, the value of $K_p$ for the given equation is 2.016

7 0

3 years ago

Food in the stomach is broken down by powerful acids and turned into?

zheka24 [161]

In this particular item, we are to determine how we call the acidic fluid-like substance that is formed after the food in the stomach is broken down by a powerful acid. The answer to this question is CHYME. The powerful acid that is referred in this item is more specifically gastric juices.

4 0

4 years ago

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