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2 years ago

16 POINTS! WILL GIVE BRAINIEST TO WHOEVER ANSWERS FIRST!

Chemistry

1 answer:

alukav5142 [94]2 years ago

7 0

1. They depend on the bacteria to keep animals below their status in the food web, so that they can eat, too.

2a. a single tree monkey, I believe.

2b. a group of tree monkeys, a cluster of trees, a pile of rocks, and a fierce wind.

2c. a group of tree monkeys

3. the Sun; the sun provides energy, which is food, to the plants and algae. Then, they are eaten and so on.

4. energy or food

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Would the water in a pond or the water in a full bathtub have more thermal energy? Explain why.

Mekhanik [1.2K]

Thermal energy is defined as the total kinetic energy of all particles in an object. Even though the cup of water has a higher temperature, the bathtub has more thermal energy because it contains much more mass of water compared to the cup.

5 0

1 year ago

A fossil was analyzed and determined to have a carbon-14 level that is 70 % that of living organisms. The half-life of C-14 is 5

Citrus2011 [14]

Answer: 2948

Explanation:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.69}{t_{\frac{1}{2}}}=\frac{0.693}{5730}=1.21\times 10^{-4}years^{-1}$

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

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant = $1.21\times 10^{-4}years^{-1}$

t = age of sample = ?

a = let initial amount of the reactant = 100

a - x = amount left after decay process = $\frac{70}{100}\times 100=70$

$t=\frac{2.303}{1.21\times 10^{-4}}\log\frac{100}{70}$

$t=2948years$

Thus the fossil is 2948 years old.

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2 years ago

What impact can limiting factors have on a population?

Salsk061 [2.6K]

Answer:

The answer is B. Limiting factors can lower birth rates, increase death rates.

7 0

2 years ago

Read 2 more answers

Complete the sentence.

Leno4ka [110]

Answer:

6, double

Explanation:

Hex- is a prefix for number 6.

Ene- is a suffix for a double bond.

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2 years ago

Briefly explain the difference between hard water and soft water.

melisa1 [442]

Answer:

I HOPE THE ABOVE INFORMATION WILL HELP YOU A LOT.

HAVE A NICE DAY.

3 0

3 years ago

16 POINTS! **WILL GIVE BRAINIEST TO WHOEVER ANSWERS FIRST!**

16 POINTS! WILL GIVE BRAINIEST TO WHOEVER ANSWERS FIRST!