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Jobisdone [24]
3 years ago
5

Please help answering 11)

Chemistry
1 answer:
8090 [49]3 years ago
8 0

Answer:

the answer is C

Explanation:

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The discipline of chemistry has made agricultural chemicals, such as fertilizer and pesticides, available to society.
dlinn [17]
Well, you can't use this word for word, but a good answer would be something like:
Pesticides release harmful chemicals into the air, not only making it toxic and unsafe for us, but it also has the potential to kill off insects. This affects the ecosystem as well, as it reduces the available food source for larger animals such as birds, which in turn, affect another species.
4 0
3 years ago
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What type of reaction is pb(no3)2(aq) + 2kcl(aq) ® pbcl2(s) + 2kno3(aq)?
Sladkaya [172]

The given reaction is,

Pb(NO_{3})_{2}(aq) +2 KCl(aq) --->PbCl_{2}(s) + 2 KNO_{3}(aq)

In this reaction, the positive and negative ions of both the reactants rearrange resulting in the formation of new compounds. Such a reaction is referred to as the double replacement or the double displacement reaction. These type of reactions usually take place in aqueous medium and one of the products is a precipitate.

Double displacement reactions are of three types, precipitation reaction, neutralization reaction and reaction involving the formation of a gas. The given reaction is a precipitation reaction as one of the products is a solid.

6 0
2 years ago
A quantity of gas has a volume if 400.0 ml when confined under a pressure of 600.0mm Hg. What will be the new volume of the gas
den301095 [7]

Answer:

1200 mL

Explanation:

Step 1:

Data obtained from the question. This includes the following:

Initial volume (V1) = 400 mL.

Initial pressure (P1) = 600 mmHg.

Final volume (V2) =..?

Final pressure (P2) = 200 mmHg

Step 2:

Determination of the final volume i.e the new volume of the gas.

Considering the question given, we understood that the temperature is constant. Therefore the gas is obeying Boyle's law. Using the Boyle's law equation, the new volume is obtained as follow:

P1V1 = P2V2

600 x 400 = 200 x V2

Divide both side by 200

V2 = (600 x 400) /200

V2 = 1200 mL

Therefore, the new volume of the gas is 1200 mL.

3 0
2 years ago
The mass of the products of a chemical reaction will be
In-s [12.5K]
The mass of the product in a chemical reaction must be equal the mass of the reactants.
3 0
3 years ago
Read 2 more answers
Students working in lab use 52.3g of CaCl2 to make a solution. When the solution is brought to a final volume of 800. mL, what i
PolarNik [594]

Answer:

The answer is C: .588 M

Explanation:

[CaCl2] = mols CaCl2/Liters of solution

molar mass of CaCl2 = 110.98 g/ 1 mole   (from periodic table)

800 mL/1000 mL = .8 Liters of solution

1)

52.3g CaCl2/ 110.98g = .47 mole

2)

.47 mole/.8 L = .589 M

So the answer is C

6 0
3 years ago
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