Give the number of significant figures in this number: 40.00

Chemistry

2 answers:

erica [24]3 years ago

5 0

Answer:

Explanation:

because the follow digits are part of the answer even though they are following a decimal

Tatiana [17]3 years ago

4 0

A significant figure is every symbol that made the number itself.

In this case, the number 40.00 has four figures but only two of them are significant 40, this is because you haven't got any more decimals than the first zero.

If you have a case with zeros in front, you take to the first non zero digits.

For example, 0.071004 you wold express as 0.071 and those 7, and 1 are the significant ones.

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which type of intermolecular force in water creates the surface tension that allows the stones to skip across the top of the wat

s2008m [1.1K]

Answer:

Hydrogen bonding

Explanation:

Water is a compound found readily in nature. It is made up of interatomic forces of covalent bonds that connects the hydrogen and oxygen bonds together in a definite ratio.

The intermolecular forces are responsible for the physical properties of substances.
These forces allows a compound to behave in certain ways.
In water, the intermolecular bonding present are the very strong hydrogen bonds.
For this bond type, the hydrogen of one water molecule is firmly attached to the oxygen of another water molecule.
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3 0

2 years ago

According to one acid base theory a base is an 1, h2 acceptor 2, h2 donor 3, h+ acceptor 4,h+ donor

kolbaska11 [484]

Answer:

3, H⁺ acceptor

Explanation:

Let's consider Bronsted-Lowry acid-base theory.

According to this theory, an acid is a substance that donates H⁺ ions. For example, HCl is an acid.

HCl + H₂O = Cl⁻ + H₃O⁺

Cl⁻ is the conjugate base of HCl.

According to this theory, a base is a substance that accepts H⁺ ions. For example, NH₃ is a base.