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nikklg [1K]
3 years ago
10

What should iron oxide be categorized

Chemistry
2 answers:
salantis [7]3 years ago
6 0

Answer:

as a result of oxidation

Explanation:

iron + oxygen ---} iron oxide

11111nata11111 [884]3 years ago
5 0

Answer:

What are you doing stepbro?

Explanation:

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A boy who weighs 30 kg is skateboarding at a speed of 5 m/s. What is the boys kinetic energy?
zheka24 [161]
I’m pretty sure it’s 150 joules
5 0
3 years ago
Which one is the right one dont mine the one i put that one is wrong
Degger [83]

Answer: The answer is B

Explanation:

7 0
2 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
martha needs to determine the density of gasoline she has determined the mass to be 1250g and the volume to be 1500ml what is th
Dahasolnce [82]

We know that the equation for density is:

D=\frac{m}{V}

where D is the density, m is the mass in grams, and V is the volume.

Given two of the variables, we can then solve for density:

D=\frac{1250g}{1500mL}=\frac{0.833g}{mL}

Therefore, we now know that the density of the gasoline is 0.833g/mL.

6 0
3 years ago
How is carbon within the lithosphere?
Mila [183]

Answer: Carbon is stored in the lithosphere in both inorganic and organic forms. Inorganic deposits of carbon in the lithosphere include fossil fuels like coal, oil, and natural gas, oil shale, and carbonate based sedimentary deposits like limestone.

Explanation:

8 0
2 years ago
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