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Vikki [24]
3 years ago
7

Will mark brainliest, please help ASAP!

Chemistry
1 answer:
Anon25 [30]3 years ago
7 0

V²+ = (B)

X³+ = (D)

Y³- = (C)

Z²- = (A)

When an element loses electrons, the element gains a positive charge

When an element gains electrons, the element gains a negative charge

NOTE: Electrons are negative charges

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During region C of the graph above the energy being absorbed is a. increasing the velocity of the water particles. b. increasing
Mkey [24]

Answer:

Your answer would be B. Increasing the distance between the water molecules and increasing their phase energy.

Explanation:

Hope this helps you answer this question!

7 0
2 years ago
Your boss asks you to design a room that can be as soundproof as possible and provides you with three samples of material. The o
Nimfa-mama [501]
D. Sample C would be best
6 0
3 years ago
Water (10 kg/s) at 1 bar pressure and 50 C is pumped isothermally to 10 bar. What is the pump work? (Use the steam tables.) O -7
11Alexandr11 [23.1K]

Explanation:

For an isothermal process equation will be as follows.

                W = nRT ln\frac{P_{1}}{P_{2}}

It is given that mass is 10 kg/s or 10,000 g/s (as 1 kg = 1000 g). So, calculate number of moles of water as follows.

                    No. of moles = \frac{mass}{\text{molar mass}}

                                           = \frac{10000 g/s}{18 g/mol}

                                           = 555.55 mol/s

                                           = 556 mol/s (approx)

As T = 50^{o}C or (50 + 273.15) K = 323.15 K. Hence, putting the given values into the above formula as follows.

                  W = nRT ln[/tex]\frac{P_{1}}{P_{2}}[/tex]

                      = 556 mol/s \times 8.314 J/ K mol K \times 323.15 K \times ln\frac{1}{10}    

                     = 556 mol/s \times 8.314 J/ K mol K \times 323.15 K \times -2.303    

                     = -3440193.809 J/s

Negative sign shows work is done by the pump. Since, 1 J = 0.001 kJ. Therefore, converting the calculated value into kJ as follows.

                     3440193.809 J/s \times \frac{0.001 kJ}{1 J}

                          = 3440.193 kJ/s

                          = 3451 kJ/s (approx)

Thus, we can conclude that the pump work is 3451 kJ/s.

6 0
3 years ago
What is the mass of 1.25 moles of Na2O?​
olga_2 [115]

Answer:

Explanation:

I have the same question

4 0
3 years ago
What volume of a 9.00 M NaOH stock solution would you need to make 800. ML of a 0.750 M NaOH solution
joja [24]

Answer: 66.66 ml

Explanation: Using Molarity equation:

M_1V_1 (stock solution)=M_2V_2(solution to be prepared)

given: M_2=0.750M

V_2=800ml

M_1=9.00M

V_1=?

9.00M\times V_1 (stock solution)=0.750M\times 800ml (solution)

V_1= 66.66ml

8 0
3 years ago
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