Answer:
The answer is
<h2>1.38 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula

From the question
mass of liquid = 138 g
volume = 100 mL
The density of the liquid is

We have the final answer as
<h3>1.38 g/mL</h3>
Hope this helps you
Answer:

Explanation:
Hello there!
In this case, since the combustion of B2H6 is:

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


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Answer:
A communicable disease
Explanation:
Diseases that can be transferred are known as communicable diseases.
The overall charge of an atom is positive if the number of electrons is less than the number of protons. Electrons are negatively charged particles while protons are positively charged particles. If there are less electrons as compared to the number of protons in an atom, then naturally the overall charge of the atom would be positive since there are excess protons. Another case would be that the overall charge of an atom is negative if the number of electrons is greater than the number of protons. An atom having more electrons than the number of the protons present would lead to a negative value of the charge since there are excess electrons.