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slamgirl [31]
2 years ago
15

Does anyone know how to do this pls????

Chemistry
1 answer:
Nonamiya [84]2 years ago
3 0
No..... I’m sorry...
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How the relative density of a substance is related to the density calculate the density of iron if its relative density is 2 and
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Answer:

How the relative density of a substance is related to the density calculate the density of iron if its relative density is 2 and a density of water is 2gcm -3

R.d= relative density of substance/ relative density of water

R.d= 2/2

R.d= 1gcm-3

Explanation:

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3 years ago
What is the empirical formula for naphthalene
german

1.Start with the number of grams of each element, given in the problem.

2.Convert the mass of each element to moles using the molar mass from the periodic table.

3.Divide each mole value by the smallest number of moles calculated.

4.Round to the nearest whole number. This is the mole ratio of the elements and is.

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Which of the following is a way that trees have been negatively impacted by human use?
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Which of the following are physical characteristics of blood? 1. it is more viscous than water 2. its temperature is about 38ºC
yawa3891 [41]

Explanation:

A property which does not bring any change in chemical composition of a substance is known as physical property.

For example, blood is more viscous than water, its pH is slightly alkaline, its temperature is about 38^{o}C (100.4^{o}F)  .

On the other hand, a property which changes chemical composition of a substance is known as a chemical property.

For example, precipitation, reactivity, toxicity etc are chemical property.

Sometimes, the change in color of a substance can also occur due to a chemical change.

Thus, we can conclude that following are the physical characteristics of blood.

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3 years ago
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