3 years ago

Can someone help me

Chemistry

2 answers:

Alexxx [7]3 years ago

8 0

The longer it takes to orbit the sun:)

Molodets [167]3 years ago

6 0

Answer:

The longer it takes to orbit the sun.

Explanation:

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Which is heavier einsteinium (Es) or europium (Eu)

SVETLANKA909090 [29]

I think the answer is einsteinium is the heavier one here.

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3 years ago

An unknown substance has a density of 56 g/cm3. Its volume is 3.5 cm.

postnew [5]

Answer:

<h3>The answer is 196 g</h3>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

mass = Density × volume

From the question we have

mass = 56 × 3.5

We have the final answer as

Hope this helps you

3 0

3 years ago

If kerosene has a specific gravity of 0.820, what force will be exerted on the circular bottom of a cylindrical kerosene tank th

Svet_ta [14]

Answer:

$F = 774146.534\,N$

Explanation:

The pressure at the bottom of the tank is:

$P_{bottom} = (0.820)\cdot (1000\,\frac{kg}{m^{3}})\cdot (9.807\,\frac{m}{s^{2}})\cdot (30\,ft)\cdot (\frac{0.305\,m}{1\,ft} )$

$P_{bottom} = 73581.921\,Pa$

The force exerted on the circular bottom is:

$F=(73581.921\,Pa)\cdot (\frac{\pi}{4} )\cdot [(12\,ft)\cdot (\frac{0.305\,m}{1\,ft} )]^{2}$

$F = 774146.534\,N$

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3 years ago

In the formation of sodium chloride by the combination of<br> sodium and chlorine:

Ierofanga [76]

Answer:

Na(s) + Cl2(g) = NaCl(s)

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3 years ago

Which is a factor in determining the average atomic mass of an element

shtirl [24]

The mass numbers of the different isotopes of that element are averaged according to their respective abundances in nature.

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3 years ago