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andrew-mc [135]
3 years ago
14

An astronaut has a mass of 60kg. Calculate their weight When they are on the surface of the moon.

Chemistry
1 answer:
IceJOKER [234]3 years ago
7 0

Answer:

I think 0kg because they are flying.

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Match the formula for the following compound: 
tester [92]

valence of magnesium is 2

and valence of sulfate-ion is 2 too

answer: MgSO4•7H2O

4 0
3 years ago
Read 2 more answers
Identify the variables in the investigation: An investigation was done with an electromagnetic system made from a battery and wi
kondaur [170]

Answer:

Independent: sizes of nails

Dependent: number of paper clips

Controlled: Battery, wire and type of nails

Explanation:

An independent variable is a variable which when changes does not the effect the results of the experiment. It does not depends upon the dependent variable.

A dependent variable is defined as a variable which is affected when the independent variable is changed by the researcher or the experimenter. It depends greatly upon the independent variable.

While a controlled variable is that variable whose value is not changed in an experiment. It contains all the constants.

In the context,

the independent variable are : sizes of nails

the dependent variables are : number of paper clips

the Controlled variables are: Battery, wire and type of nails

8 0
3 years ago
59.23
kramer

Answer:

the proton and the neutron

Explanation:

mass of The proton is approximately  1.6726 × 10^-27 Kg

mass of the electron  is approximately 9.109 × 10^-31 Kg

mass of the neutron  is approximately 1.6749 × 10^-27 Kg

Here we see that mass of proton and neutron is approximately similar.

_____________________________________________

Lets see what is  the mass of these particle IN atm unit

mass of these particles can also be described in form of amu(atomic mass unit)

1 atm is the mass defined as 1/12 th of mass of the carbon-12(c-12) atom.

In terms of unit atm

mass of proton = 1 amu

mass of electron = 5.45 × 10−4 amu

mass of neutron = 1 amu

hence we can say that mass of proton = mass of neutron.

mass of atom is sum of mass of all the neutron and proton in the atom.

Hence, mass of neturon and atom cannot be equal.

This makes option four the neutron and the atom , the wrong choice.

correct answer is the proton and the neutron

therefore, An atom contains one proton , one electron and one neutron then, mass of proton is similar in mass of neutron.

5 0
3 years ago
Read 2 more answers
Is the salt solution in the Dead<br>Sea dilute, concentrated or<br>saturated? Explain.​
dexar [7]
The waters of the Dead Sea are extremely saline, and, generally, the concentration of salt increases toward the lake's bottom. ... The deep water was saturated with sodium chloride , which precipitated to the bottom.
5 0
2 years ago
Which diagram represents this molecule
Rudik [331]

Answer:

I think it is C

Explanation:

Hope this helps!! :)

If I'm wrong, then greatest apologies

5 0
3 years ago
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