Increasing the intensity and duration of an exercise program too quickly can lead to injury.

Answers

Answer 1

Answer: assuming you want a true or false answer, this is true.

Answer 2

Answer:

The Answer Is True :) Took The Test:)

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You may normally expect a slow reaction if a low activation energy is required.

Answers

The statement is false. A low activation energy does not signifies a slower reaction rather it may mean that the reaction would proceed faster. A low activation energy means a low energy requirement for the reaction to occur which results to much faster production of products.

Answer:

False

Explanation:

Leutium-176 has a half-life of 3.85 mc012-1.jpg 1010 years. After 1.155 mc012-2.jpg 1011 years, how much leutium-176 will remain from an original 16.8-g sample?2.10 g
3.00 g
5.56 g
8.40 g

Answers

Answer : The amount left of leutium-176 will be, 2.10 g

Solution :

First we have to calculate the rate constant, we use the formula :

$k=(0.693)/(t_(1/2))$

$k=\frac{0.693}{3.85* 10^(10)\text{years}}$

$k=0.18* 10^(-10)\text{years}^(-1)$

Now we have to calculate the amount left of the sample.

Expression for rate law for first order kinetics is given by :

$t=(2.303)/(k)\log(a)/(a-x)$

where,

k = rate constant = $0.18* 10^(-10)\text{years}^(-1)$

t = decay time = $1.155* 10^(11)\text{ years}$

a = initial amount of the sample = 16.8 g

a - x = amount left after decay process = ?

Now put all the given values in above equation, we get

$1.155* 10^(11)\text{years}=\frac{2.303}{0.18* 10^(-10)\text{years}^(-1)}\log(16.8)/(a-x)$

$a-x=2.10g$

Therefore, the amount left of leutium-176 will be, 2.10 g

Answer:

Explanation:

If 200.0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper?

Answers

Answer:

The theoretical yield of copper is 79.6281 g

Explanation:

$CuSO_4+Zn\rightarrow ZnSO_4+Cu$

Moles of copper sulfate = $(200.0 g)/(159.609 g/mol)=1.2530 mol$

According to reaction 1 mol of copper sulfate gives 1 mol of copper .

Then 1.2530 mol of copper sulfate will gives :

$(1)/(1)* 1.2530 mol=1.2530 mol$ of copper .

Mass of 1.2530 mol of copper :

1.2530 mol × 63.55 g/mol = 79.6281 g

The theoretical yield of copper is 79.6281 g

The theoretical yield of copper is a 78:32 ratio.

How are regional climate patterns caused by atmospheric and ocean flows

Answers

Answer:

Ocean currents act as conveyer belts of warm and cold water, sending heat toward the polar regions and helping tropical areas cool off, thus influencing both weather and climate. .

A bullet of mass 50g is fired from a gun at a speed of 250ms. What is the kinetic energy possessed by the bullet?

Answers

Answer: the kinetic energy possessed by the bullet is 1562.5 Joules (J).

Explanation:

Which element has the greatest electronegativity?a. Chlorine
b. Oxygen
c. Sulfur
d. Phosphorus
e. Fluorine

Answers

Fluorine has the highest. Fluorine's electronegativity is 4.0

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