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dmitriy555 [2]
3 years ago
6

Please help me thank you!!

Chemistry
1 answer:
mestny [16]3 years ago
4 0

Answer:

I kinda forgot but let me think

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Which of the following sets of units could be appropriate for a zero-order rate constant?Answers-1L mol-1 s-1L2 mol-2 s-1L3 mol-
mars1129 [50]

Answer:

mol·L⁻¹·s⁻¹

Explanation:

In the case of a <em>zero-order reaction</em>, the reaction rate does not change with the decrease or increase in the concentrations of the reactants:

  • rate = k

And because the rate must have units of mol·L⁻¹·s⁻¹, then the rate constant <em>k</em> must also have units of mol·L⁻¹·s⁻¹.

3 0
3 years ago
Determine the mass of grams of led(II) sulfate that will dissolve in 2.50 x 10^2 ml water. Ksp= 1.8 x 10^-8
ki77a [65]

Answer:

9.86*10^(-3) g

Explanation:

PbSO4 ----> Pb^(2+) + SO4^(2-)

                     s               s

Ksp = s²

s =√Ksp = √(1.8*10^-8) = 1.3*10^(-4) mol/L

The molar solubility PbSO4 = 1.3*10^(-4) mol/L.

2.50 *10^2 mL *1L/10³mL =0.250L

1.3*10^(-4)mol/L *0.250L*303.3 g/mol = 9.86*10^(-3) g

7 0
3 years ago
A photon has a frequency of 7.3 × 10–17 Hz. Planck’s constant is 6.63 × 10–34 J•s. The energy of the photon, to the nearest tent
yawa3891 [41]

Given:

E = 7.3 × 10–17 Hz                                                                                      

 h= 6.63 × 10–34 J•s

Now <em>E = hf</em>

where E is the energy of the photon                                                          

h is the Planck's constant                                                                          

f is the frequency of the photon

Substituting the values in the equation we get                                        

E= 7.3 × 10^-17 × 6.63 × 10^-34                                                                  

<u>E= 4.8399 × 10^-50  J. </u>                                                                                                      



7 0
4 years ago
Read 2 more answers
What are the functions of respiratory system​
VMariaS [17]

Answer:

Your lungs are part of the respiratory system.

Explanation:

A group of organs and tissues that work together to help you breathe.The respiratory system's main job is to move fresh air into your body while removing waste gases.

Was this helpful?

If so let me know and please mark me brainiest.

6 0
3 years ago
Which of the following statements is true?
Ray Of Light [21]

Answer: Metals tend to gain electrons.

Explanation: Hope this helps!!! Have an amazing day!

6 0
4 years ago
Read 2 more answers
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