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2 years ago

How can we prevent coral reefs from dying in the first place?

Chemistry

1 answer:

ruslelena [56]2 years ago

8 0

Answer:

recycle and dispose of trash properly

minimize use of fertilizer

use environmentally friendly modes of transportation

scientists say creating marine refuges where fishing, mining, and recreating are off limits, make the reefs healthier, and so more resilient

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I) What could Linda do to find out if there were salts dissolved in the

zhenek [66]

Answer:

she can use crystalization method.

Explanation:

She should boil that liquid on flame and then cool it down on mederate temprature and check it out rather the crystals formed or not . if crystals are formed then there will be salts.

And if she want topredict the certain salt then she has to perform certain reactions.

6 0

3 years ago

An element's atomic number is 78. How many protons would an atom of this element have?

Oksanka [162]

Answer:

Explanation:

atomic number is number of protons

6 0

3 years ago

***Question in photo***<br><br> Is the entropy positive or negative in this question?

Kamila [148]

Answer:

Enthalpy change is negative

Entropy change is Positive

Explanation:

4 0

2 years ago

What is molarity of 47.0 g KCl dissolved in enough water to give 375 mL of solution?

natita [175]

This question provides us –

Weight of $\bf KCl$ is = 47 g
Volume, V = 375 mL

__________________________________________

Molar Mass of $\bf KCl$ –

$\qquad$ $\twoheadrightarrow\bf 39.0983 \times 35.453$

$\qquad$ $\twoheadrightarrow\bf 74.5513$

<u>Using formula</u> –

$\qquad$ $\purple{\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ W\times 1000}{MV}}$

$\qquad$ $\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{ 47 \times 1000}{74.5513\times 375}$

$\qquad$ $\twoheadrightarrow\bf Molarity _{(Solution)} = \dfrac{47000}{27956.7375}$

$\qquad$ $\twoheadrightarrow\bf Molarity _{(Solution)} = \cancel{\dfrac{47000}{27956.7375}}$

$\qquad$ $\twoheadrightarrow\bf Molarity _{(Solution)} = 1.68117M$

$\qquad$ $\pink{\twoheadrightarrow\bf Molarity _{(Solution)} = 1.7M}$

Henceforth, Molarity of the solution is = 1.7M

___________________________________________

6 0

2 years ago

PLEASE HELP ME WITH MY CHEM TEST

fgiga [73]

Answer:

8. 0.96

9. d

10b

11. 3

12 d

Explanation:

4 0

2 years ago