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3 years ago

Solve the following problem and select the correct answer: (4.5 x103)(3.5 x102)

Chemistry

1 answer:

oee [108]3 years ago

7 0

Answer:

D: 1.6 x 10^6

Explanation:

(4.5 x103)(3.5 x102

Multiply

4.5 x 3.5 = 15.75

Now add 10^3 + 10^2 because we are finding the product of this.

10^3 + 10^2 = 10^5

Use sig figs

15.75 rounded to the whole number is 16.

A scientific notation always has to only have the tenths place only.

Change 16 to 1. 6

Then change 10^5 to 10^6

And your final answer would be 1.6 x 10^6.

Hope I helped!

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If you were converting from milli- to centi- units, would you move the decimal point to the left or the right

yan [13]

Answer:

Left

Explanation:

6 0

3 years ago

What is an ephemeral stream? A)one that flows only after rainfall B) one that flows only in flat lands C) one that is formed onl

kupik [55]

Answer: Option (a) is the correct answer.

Explanation:

The stream that flows during or after the rainfall is called an ephemeral stream. This stream occurs in areas where there is less rainfall or deficiency of moisture.

The stream that flows only in flat lands is called as river.

Mechanical weathering results in the breaking of rocks causes ice wedging.

Chemical weathering results in the change in molecular structure of rocks and soil.

Thus, it can be concluded that option (a) is the correct answer.

5 0

3 years ago

1. True or false, phosphorus-33 is an isotope

SIZIF [17.4K]

Answer:

It's an ion, so false

Explanation:

isotope if for mass, while the -33 is the charge, that would make it an ion

Hope this helps

6 0

3 years ago

Read 2 more answers

Given the chemical reaction: Hg2+(aq) + Cu(s) + Hg(s) + Cu2+(aq)

Pavel [41]

Answer: When the reaction reaches equilibrium, the cell potential will be 0.00 V

Explanation:

Equilibrium state is the state when reactants and products are present but the concentrations does not change with time.

The equilibrium is dynamic in nature and the reactions are continuous in nature. Rate of forward reaction is equal to the rate of backward reaction.

The standard emf of a cell is related to Gibbs free energy by following relation:

$\Delta G=-nFE^0$

The Gibbs free energy is related to equilibrium constant by following relation:

$\Delta G=-2.303RTlog K$

For equilibrium $\Delta G=0$

Thus $0=-nFE^0$

$E^0=0$

Thus When the reaction reaches equilibrium, the cell potential will be 0.00 V

5 0

3 years ago

What is the correct chemical formula for Fe3+ and P3-

umka21 [38]

Answer:

FeP, which is iron (III) phosphide.

Explanation:

Hello,

In this case, when iron (III) ion and phosphide ion react, the following compound is formed as the charges are exchanged to each other at the subscripts:

$Fe^{3+}+P^{3-}\rightarrow Fe_3P_3$

Yet, since the three could be simplified to 1 at both Fe and P, we obtain:

$Fe^{3+}+P^{3-}\rightarrow FeP$

Which is known as iron (III) phosphide.

Best regards.

6 0

3 years ago