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blagie [28]
3 years ago
7

How many significant figures are in the number 4.02 x 10^-9 ?

Chemistry
2 answers:
umka21 [38]3 years ago
6 0
3 cuz I’m smart and I know everything:)
Stolb23 [73]3 years ago
4 0

Answer:

3 sig figs

Explanation:

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natima [27]

Answer:

molecules

Explanation:

they are molecule

5 0
3 years ago
What is pressure in relation to a gas?
labwork [276]

The pressure of a gas is the force that a gas exerts per unit area of the container.

Pressure is defined as force per unit area. Gas molecules are constantly colliding against the walls of the container. The pressure of the gas is the force the gas is exerting on its container.

Since temperature is defined as the average kinetic energy of the molecules of a gas then the higher the temperature, the faster the particles move.

The volume of a container refers the size if the container.

The pressure of a gas is inversely proportional to its volume according to Boyle's law. Thus implies that if the pressure of the gas goes up, the volume has to go down.

For a compound to be called an acid, it must contain H+ and H3O+ when dissolved in water.

For a compound to be called a base, the compound must dissolve in water to yield hydroxide ions.

Learn more: brainly.com/question/11543614

7 0
2 years ago
How to make Sodium thiosulfate
Arada [10]

Explanation:

Method of prepration of sodium thiosulphate - definition

In the laboratory, this salt can be prepared by heating an aqueous solution of sodium sulphite with sulphur or by boiling aqueous NaOH and sulfur according to this equation:

6NaOH + 4 S _{2} Na _{2} S ->Na _{2} S_{2}O_{3}+ 3H _{2}O.

3 0
3 years ago
What type of bonds hold the atoms together in polyatomic ions
IRISSAK [1]
<span>This is a covalent bond, a bond in which atoms share electrons. Covalent bonding generally happens between nonmetals. Covalent bonding is the type of bond that holds together the atoms within a polyatomic ion. It takes two electrons to make a covalent bond, one from each bonding atom.

</span><span>Mark as brainlist if correct please and have a blessed day!
</span>
8 0
3 years ago
Based on the following electronegativity values, which of the following best explains the polarity of the bond formed?
kvv77 [185]

Answer:

see the pic for the answer

3 0
3 years ago
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