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Elodia [21]
3 years ago
9

15 points

Chemistry
1 answer:
castortr0y [4]3 years ago
4 0

Answer:

The number of proton of magnisium = 12

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3 years ago
Cylinder with a mass of 12g has a radius measuring 2cm and height of 6cm what is its density
lakkis [162]

Answer:

Given:

m = 12 g, the mass of the cylinder

r = 2 cm, the radius of the cylinder

h = 6 cm, the height of the cylinder.

Calculate the volume, V, of the cylinder.

V = πr²h

  =  π*(2 cm)²*(6 cm)

  = 75.398 cm³

By definition,

density = mass/volume.

Therefore,

density = m/V

            = (12 g)/(75.398 cm³)

            = 0.159 g/cm³

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Answer: 0.16 g/cm³

8 0
3 years ago
Which skeleton equation is correct for this question below:?
shtirl [24]
I think the correct answer from the choices listed above is option C.

Calcium carbonate  = CaCO3
sulfur dioxide = SO2
oxygen = O2
calcium sulfate = CaSO4
Carbon dioxide = CO2

The correct skeleton equation for the reaction would be CaCO3(s)+SO2(g)+O2(g) --> CaSO4(s)+ CO2(g). 
4 0
3 years ago
Oxygen (O2) and nitrogen (N2) do not have much greenhouse effect, but several trace gases including carbon dioxide (CO2), methan
Rina8888 [55]

Answer:A.Preventing convection currents that take heat aloft, in the same way that the glass of a greenhouse stops convection currents and so makes the air in the greenhouse warmer.

Explanation: when ultraviolet solar radiation penetrates into the Earth's atomosphere and heats it,

the conventional radiation is supposed to be radiated back into the atmosphere as heat.however this is prevented from happening due to green house gases,they absorb the radiant heat and retain this heat within the Earth's environment and so behaves like the glass barrier in green houses.these green house gases trap heat within the Earth causing global warming .

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4 years ago
What energy transformation occurs in solar panels found on a roof?
sweet [91]

Explanation:

Solar panels are visible on roof tops on homes and businesses. Solar thermal technology transforms solar energy to heat, which is then used to heat homes, businesses and even swimming pools, or transformed again into electricity.

3 0
3 years ago
Read 2 more answers
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