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qaws [65]
3 years ago
12

SOMEONE HELP ILL BRAINLISTTTTTTY. Write in your own wordsss. I’ll give you 70 points and a brainlist in total. Which is enough w

rite it in full sentence summarise a paragraph or so not too long but yeah make it make sense.
1) Give a specific example of a species of plant or animal that had been identified as ‘vulnerable’ or ‘endangered’ or ‘extinct’ as a result of water pollution. Give details - where, when and why did it happen?
Chemistry
1 answer:
ZanzabumX [31]3 years ago
6 0

Answer:

Explanation:

Hawksbill turtles were identified as endangered due to water pollution. Chemical pollutants can weaken turtle's immune systems making them prone to diseases. Plastic packaging, nylon fishing lines etc can be eaten by turtles or they may get stuck in them resulting in death.

sorry this is the only details i can give

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An atom of Silver loses three electrons, what is its charge?
Dovator [93]

Answer:

+3

Explanation:

If an atom loses electrons, it becomes positive. Because silver loses 3 electrons, the charge becomes positive 3.

3 0
3 years ago
It was found that 2.35 g of a compound of phosphorus and chlorine contained 0.539 g of phosphorus. What are the percentages by m
igor_vitrenko [27]

Answer:

Explanation:

P = 2.35g

Cl= 0.539 g

% MASS = mass of  X/ mass of a compound

 % mass of P =   2.35 / (2.35+ 0.539) =  81.34%

  % mass of Cl =  0.539 /(2.35+ 0.539) =  18.66 %

3 0
4 years ago
Which are causes of mechanical weathering? Check all that apply.
Karo-lina-s [1.5K]
Plant growth and pressure release !
3 0
4 years ago
Read 2 more answers
If 28.0 grams of Pb(NO3)2 react with 18.0 grams of NaI, what mass of PbI2 can be produced? Pb(NO3)2 + NaI → PbI2 + NaNO3
ss7ja [257]

Answer:- 27.7 grams of PbI_2 are produced.

Solution:- The balanced equation is:

Pb(NO_3)_2+2NaI\rightarrow PbI_2+2NaNO_3

let's convert the grams of each reactant to moles and calculate the grams of the product and see which one gives least amount of the product. This least amount would be the answer as the least amount we get is from the limiting reactant.

Molar mass of Pb(NO_3)_2 = 207.2+2(14.01)+6(16)  = 331.22 gram per molmolar mass of NaI = 22.99+126.90 = 149.89 gram per molMolar mass of [tex]PbI_2 = 207.2+2(126.90) = 461 gram per mol

let's do the calculations for the grams of the product for the given grams of each of the reactant:

28.0gPb(NO_3)_2(\frac{1molPb(NO_3)_2}{331.22gPb(NO_3)_2})(\frac{1molPbI_2}{1molPb(NO_3)_2})(\frac{461gPbI_2}{1molPbI_2})

= 39.0gPbI_2

18.0gNaI(\frac{1molNaI}{149.89gNaI})(\frac{1molPbI_2}{2molNaI})(\frac{461gPbI_2}{1molPbI_2})

= 27.7gPbI_2

From above calculations, NaI gives least amount of PbI_2, so the answer is, 27.7 g of PbI_2 are produced.

8 0
3 years ago
Question 3 (2 points)
Mademuasel [1]

Answer:sksk

Explanation:sksk

4 0
3 years ago
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