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4 years ago

In any energy pyramid, only ________ of the available energy is passed from one level to the next.

Chemistry

1 answer:

ddd [48]4 years ago

3 0

10%
At each trophic level only small proportion of energy is transferred to the next level

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In the following reaction, 2NaCl 2Na + Cl2 sodium and chlorine are products, salts, reactants, or ions?

avanturin [10]

The answer is: sodium and chlorine are products.

Balanced chemical reaction of sodium chloride decomposition:

2NaCl → 2Na + Cl₂.

Decomposition is reaction where one substance is broken down into two or more simpler substances.

From one chemical compound (in this example sodium chloride) two new substances (sodium and chlorine) are produced.

6 0

3 years ago

Read 2 more answers

Potassium chlorate (kclo3) decomposes in a reaction described by this chemical reaction: 2kclo3(s) → 2kcl(s) + 3o2(g) how does t

soldi70 [24.7K]

When the KClO3 decomposes, more oxygen is produced. I don't think I know any other possibility exists.

5 0

4 years ago

Question 2 (0 points)

bazaltina [42]

Answer:

The probability of spinning red with the spinner or rolling an odd number with the die is $\dfrac{1}{8}$

Explanation:

Given that,

Total color in spinner = 4

Let the area of four parts is equal in the spinner.

We need to calculate the probability of spinning red

Using formula of probability

$P(A) = \dfrac{Number\ of\ red\ color\ outcome}{Total\ number\ of\ colors\ in\ the\ spinner}$

Put the value into the formula

$P(A)=\dfrac{1}{4}$

We need to calculate the probability of odd number of the die

Using formula of probability

$P(B) = \dfrac{Number\ of\ odd\ digits\ outcome}{Total\ number\ of\ digits\ in\ the\ die}$

Put the value into the formula

$P(B)=\dfrac{3}{6}$

$P(B)=\dfrac{1}{2}$

We need to calculate the probability of spinning red with the spinner or rolling an odd number with the die

Using formula of probability of two events which is independent

$P(A\ and\ B)=P(A)\times P(B)$

Put the value into the formula

$P(A\ and\ B)=\dfrac{1}{4}\times\dfrac{1}{2}$

$P(A\ and\ B)=\dfrac{1}{8}$

Hence, The probability of spinning red with the spinner or rolling an odd number with the die is $\dfrac{1}{8}$

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3 years ago

How many moles of NH3 are necessary to produce 0.824 mol N2

kolezko [41]

Moles H2 required = 3 x 0.230=0.690
moles H2 in excess = 0.750 -0.690 =0.060 

the ratio between N2 and NH3 is 1 : 2 
moles NH3 = 0.230 x 2 = 0.460

3 0

4 years ago

Read 2 more answers

Which characteristics describe bacteria? Check all that apply. are microscopic are single celled are multicelled have shapes tha

belka [17]

Answer:

Are microscopic

Are single celled

Have shapes that include sphere, rod, and spiral

Do not have nuclei and membrane-bound organelles

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4 years ago