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3 years ago

12

Which organelle allows plants to make their own food?

1 answer:

Setler [38]3 years ago

5 0

Answer:

chloroplast is the correct answer

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James chadwick, like ernest rutherford, had to infer that neutrons were present in

tatyana61 [14]

The claim that scientific knowledge is based on observation and inference is that science is always about empirical evidence , and when making observations , we can get some evidences and inference which serves a conclusion gotten on basis of evidence and reasoning.

<h3>What is scientific knowledge ?</h3>

Science knowledge serves as the knowledge that is based and focus on empirical evidence.

It should be noted that in Science disciplines their is sharing of common rules of evidence which is needed in evaluation of explanations about natural systems.

Read more about scientific knowledge ;

brainly.com/question/25961563

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7 0

2 years ago

4. What threatens the health of coral reefs? (Select all that apply.)

Tanzania [10]

Answer:

Explanation:

1,2,3

8 0

3 years ago

Read 2 more answers

Fe(s) + CuSO4(aq) <===> Cu(s) + FeSO4(aq)

Ludmilka [50]

Answer : The original concentration of copper (II) sulfate in the sample is, $5.6\times 10^{-1}g/L$

Explanation :

Molar mass of Cu = 63.5 g/mol

First we have to calculate the number of moles of Cu.

Number of moles of Cu = $\frac{\text{Mass of Cu}}{\text{Molar mass of Cu}}=\frac{89\times 10^{-3}g}{63.5g/mol}=1.40\times 10^{-3}mole$

Now we have to calculate the number of moles of $CuSO_4$

Number of moles of Cu = Number of moles of $CuSO_4$

Number of moles of $CuSO_4$ = $1.40\times 10^{-3}mole$

Now we have to calculate the molarity of $CuSO_4$

$\text{Molarity}=\frac{\text{Moles of }CuSO_4\times 1000}{\text{Volume of solution (in mL)}}$

Now put all the given values in this formula, we get:

$\text{Molarity}=\frac{1.40\times 10^{-3}mole\times 1000}{400.mL}=0.0035M$

To change mol/L into g/L, we need to multiply it with molar mass of $CuSO_4$

Molar mass of $CuSO_4$ = 159.609 g/mL

Concentration in g/L = $0.0035M\times 159.609g/mol=0.5586g/L\approx 5.6\times 10^{-1}g/L$

Thus, the original concentration of copper (II) sulfate in the sample is, $5.6\times 10^{-1}g/L$

3 0

3 years ago

What will be equation for sugar,baking soda,petri and sad?

Scilla [17]

Answer:

sugar snake i belive

Explanation:

hope this works

7 0

2 years ago

3. 2.15 x 3.1 x 100 =

jeka94

Answer:

666.5

Explanation:

Multiply 2.15 and 3.1 to get 6.665.

6.665×100≈666.5

Multiply 6.665 and 100 to get 666.5.

666.5

3 0

4 years ago

Read 2 more answers