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3 years ago

As of August 2019 the population of the Earth is 7.7 billion (7.7 x 10°)

Chemistry

1 answer:

Viefleur [7K]3 years ago

6 0

Answer: 8.24x10^5 years, or 8.24x10^3 centuries

Explanation: Sequential conversions to arrive at a total population rate of 2.31x10^10 atoms/sec for the entire population. Total seconds would be (6.02x10^23 atoms/2.31x10^10 atoms/sec) = 2.60x10^13 seconds. No breaks allowed, then (2.60x10^13 seconds)/(3.1536x10^7 sec/year)= 8.24x10^5 years.

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Which reaction type is the following: AgF + CaCl2 --> AgCl + CaF2

nevsk [136]

Explanation:

${\small{\underline{\bf{\red{answer...}}}}} \\ \\$

$\small\mathfrak\purple{Double \: displacement \: reaction} \\ \\ \small\mathfrak\orange{hope \: it \: helps...}$

6 0

3 years ago

There are 50 fish in the pond that have tags. You catch 25 fish, and 5 of them have tags. What is the best estimate of the numbe

sergeinik [125]

Answer: 250

Explanation:

You work this problem by using proportions.

A proportion is the equalization of two ratios.

Here you assume that the ratio of fish with tags to total fish that you catch is the same than the ratio of fish with tags to total fish in the pond.

Mathematically:

5 fish with tag / 25 fish = 50 fish with tag / x

5 / 25 = 50 / x

Solve for x:

Multiplication property of equality: x × 5 = 50 × 25
Division property of equality: x = 50 × 25 / 5
Result: 250

8 0

3 years ago

Read 2 more answers

A solution that contains a large amount of solute would be described as what

antiseptic1488 [7]

Answer:

A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.

8 0

3 years ago

What is the volume of 2.268mol of oxygen gas at 35○C and 3.0atm?

Eduardwww [97]

The volume is

$3 x_{123}$

6 0

3 years ago

PLZ HELP GOD PLZ HELP ME PLZ AWNSER 11. AND 14.

JulsSmile [24]

11, ions
14, electrolyte

hope this helps

6 0

4 years ago