3 years ago

Would a pure substance ever settle out and form two distinct layers? Explain your reasoning.

1 answer:

6 0

Answer:

No, the only way they can be separated is through chemical methods. ... A compound is made up of two or more elements that are chemically combined and elements are combined to form a compound.

Explanation:

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Drag the tiles to the correct locations. Each tile can be used more than once, but not all tiles will be used. One or more locat

Nata [24]

Answer:

Answer is on the foto.

Explanation:

Complete Lewis formula is on picture 2

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3 years ago

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Write the answer in scientific notation when you multiply 2 x 104 by 3 x 104.

emmasim [6.3K]

Answer:

6× 10⁸

Explanation:

We need to find the multiplication of 2 x 10⁴ by 3 x 10⁴.

2 x 10⁴ × 3 x 10⁴

= (3 × 2) x 10⁴ x 10⁴

= 6 x 10⁴ x 10⁴

= 6 × 10⁴⁺⁴

= 6× 10⁸

Hence, the required answer is 6× 10⁸.

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3 years ago

Filtration can separate a mixture of fine sand and coarse gravel. The holes in the filter should be large enough to allow ______

Charra [1.4K]

The sand to pass through, but not the gravel. Hope this helps!

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2 years ago

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What mass of HBO2 is produced from the<br> combustion of 139.5 g of B2H6?<br> Answer in units of g.

aliina [53]

Answer:

$m_{HBO_2}=441.8gHBO_2$

Explanation:

Hello there!

In this case, since the combustion of B2H6 is:

$B_2H_6+3O_2\rightarrow 2HBO_2+2H_2O$

Thus, since there is 1:2 mole ratio between the reactant and product, the produced grams of the latter is:

$m_{HBO_2}=139.5gB_2H_6*\frac{1molB_2H_6}{27.67gB_2H_6} *\frac{2molHBO_2}{1molB_2H_6} *\frac{43.82gHBO_2}{1molHBO_2}$

$m_{HBO_2}=441.8gHBO_2$

Best regards!

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2 years ago

What are the products of photosynthesis?

gtnhenbr [62]

Answer:

Glucose also called(Energy)

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3 years ago