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3 years ago

15

Of the eight most abundant elements in earths crust, what percentage does the six next most abundant elements of earths crust ma

ke up?

1 answer:

Mrac [35]3 years ago

5 0

Answer:

the sixth most abundant element in the earth's crust is sodium and it occupies 2.8%

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3 years ago

If you put a object in front of the mirror why does it appear the opposite way

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3 years ago

Can someone help me with this please

andrezito [222]

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2 years ago

Hi, Solve for λ<br> E=hc/λ

Paul [167]

Answer:

λ=hc/E

Explanation:

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3 years ago

If the mass of a 1.8 g paperclip was able to be completely converted to energy, how much energy would you obtain?

Anton [14]

Answer:

$E=1.62\times 10^{14}\ J$

Explanation:

Given that,

The mass of the paperclip, m = 1.8 g = 0.0018 kg

We need to find the energy obtained. The relation between mass and energy is given by :

$E=mc^2$

Where

c is the speed of light

So,

$E=0.0018\times (3\times 10^8)^2\\\\E=1.62\times 10^{14}\ J$

So, the energy obtained is $1.62\times 10^{14}\ J$ .

7 0

2 years ago