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mylen [45]
3 years ago
15

How many significant digits should be used to report the answer to each of the following calculations? (2.75518 + 9.01 + 3.3349)

/ (2.1)
Chemistry
1 answer:
Allisa [31]3 years ago
6 0

Answer:

2

Explanation:

You write your answer with the same number of significant figures as the number with the smallest amount of figures, in this case, that number is 2.1 so your answer should be written with 2 significant figures.

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The reaction of an acid and a base will always produce what kind of salt?
Illusion [34]

Answer:

the answer of the question is c

7 0
2 years ago
What is the correct equation for the reaction quotient of the following reaction? 2Fe3+(aq) + Zn(s) ⇌ 2Fe2+(aq) + Zn2+(aq)
Ira Lisetskai [31]

Explanation:

A reaction quotient is defined as the ratio of concentration of products over reactants raised to the power of their stoichiometric coefficients.

A reaction quotient is denoted by the symbol Q.

For example, 2Fe^{3+}(aq) + Zn(s) \rightleftharpoons 2Fe^{2+}(aq) + Zn^{2+}(aq)

The reaction quotient for this reaction is as follows.

            Q = \frac{[Fe^{2+}]^{2}[Zn^{2+}]}{[Fe^{3+}]^{2}}

[Zn] will be equal to 1 as it is present in solid state. Therefore, we don't need to write it in the reaction quotient expression.

3 0
3 years ago
How many pi bonds are present in a molecule of HCP?
Anestetic [448]

Answer:

2

Explanation:

6 0
3 years ago
If a reaction occurs when a piece of metal is placed in a solution, what can you conclude about the solution?
USPshnik [31]
Hello!

If a reaction occurs when a piece of metal is placed in a solution, you can conclude that the solution is <span>probably acidic because bases rarely react with metals.

Strong Acids, like HCl, react with metals to produce salts and release gaseous hydrogen (H</span>₂) which is evidenced by the generation of bubbles in the solution. The general chemical equation for this kind of reactions for a metal M and an acid HA is:

2M(s) + 2HA(aq) → 2MA(aq) + H₂(g)

Have a nice day!
<span>

</span>
4 0
3 years ago
A substance has a mass of 360 g and a volume of 7.5 cm3. What is its density?
a_sh-v [17]
D = g / cm³

Density = mass / volume

D = 360 g / 7.5 cm³

D = 48 g/cm³

answer D

hope this helps!
7 0
3 years ago
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