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kondaur [170]
4 years ago
11

I literally don’t know what I’m doing please help

Chemistry
1 answer:
laila [671]4 years ago
7 0
There are 50 mL in the jar
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What is the velocity baseball field to school
Zinaida [17]

Answer:Velocity, one of the most frequently used tools for evaluating pitchers, represents the maximum speed of a given pitch at any point from its release to the time it crosses home plate.

Explanation:Velocity, one of the most frequently used tools for evaluating pitchers, represents the maximum speed of a given pitch at any point from its release to the time it crosses home plate.

3 0
4 years ago
Identify the conjugate base in the equation below
givi [52]

Answer:

a. CH3COO⁻.

Explanation:

Hello there!

In this case, according to the given ionization reaction of acetic acid:

CH₃COOH + H₂O --> H₃O⁺ + CH₃COO⁻

Whereas we can evidence how the CH₃COOH is the acid whereas H₂O the base, as the former donates H ions to the latter, which accepts them; we can infer that H₃O⁺ is the conjugate acid, resulting from the base and the a. CH3COO⁻ is the conjugate base, resulting from the acid.

Best regards!

5 0
3 years ago
The​ half-life of the radioactive element unobtanium dash 53 is 20 seconds. if 32 grams of unobtanium dash 53 are initially​ pre
Lelu [443]
when the half-life is the amount of time which the radioactive isotopes need to

be in half.

So when w start with 32 g of unobtanium 53 so :

1- after 20 sec the number of grams remain = 32/2

                                                       = 16 g

2- and after 40 sec the number of grams remain

16 g will cut in half:

= 16 / 2 

= 8 g

3- and after 60 sec the number of grams remain

8 g will cut in half:

= 8g /2

= 4 g

4- and after 80 sec the number of grams remain

4 g will cut in half:

= 4 g /2

 = 2 g

5-after 100 sec the number of grams remain

2 g will cut in half :

     = 2g /2 

     = 0 g

after 100 sec there are no grams remain
6 0
3 years ago
Read 2 more answers
How did American prepare for and fight for the France battle
asambeis [7]

Answer:

their warfare had changed dramatically

5 0
3 years ago
Read 2 more answers
Copper(II) sulfide, CuS, is used in the development of aniline black dye in textile printing. What is the maximum mass of CuS wh
IrinaK [193]

Explanation:

The chemical reaction equation will be as follows.

           CuCl_{2} + (NH_{4})_{2}S \rightarrow 2NH_{4}Cl + CuS

As 1 mole CuCl_{2} reacts with 1 mole of (NH_{4})_{2}S

Hence, moles of CuCl_{2} = Molarity × Volume (in mL)

                                              = 0.5 × 38.0 mL

                                              = 0.019 mol

Moles of (NH_{4})_{2}S = Molarity × Volume (in mL)

                                           = 0.6 × 42.0 mL

                                           = 0.0252 mol

As moles of CuS is less than the moles of (NH_{4})_{2}S. This means that CuS is the limiting reagent.

Thus, maximum moles of CuS formed are 0.019 mol. As molar mass of CuS is 95.6 g/mol.

Therefore, maximum mass of CuS can be formed is 95.6 g/mol \times 0.019 mol

                    = 1.8164 g

Thus, we can conclude that maximum mass of CuS formed is 1.8164 g.

6 0
3 years ago
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