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2 years ago

Is it possible to tell if an acid or base is strong or weak just by looking at its chemical formula?

1 answer:

8 0

It is.

An acid will be strong when its conjugated base is highly stable, and vice-versa.

That can occur for instance through electronic delocalization.

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Which of these forces is acting on a baseball sitting on level ground? A. applied force B. frictional force C. gravitational for

snow_lady [41]

C. gravitational force

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2 years ago

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A lead atom has a mass of 3.14 x 10 to the negative 22nd g.How

frozen [14]

Explanation:

The given data is as follows.

Mass of a lead atom = $3.14 \times 10^{-22}$

Volume = 2.00 $cm^{3}$

Density = 11.3 $g/cm^{3}$

As it is mentioned that 1 cubic centimeter contains 11.3 grams of lead.

So, in 2 cubic centimeter there will be $2 \times 11.3 g = 22.6 g$ of lead atoms.

One lead atom has a mass of $3.14 \times 10^{-22}$ . Therefore, number of atoms present in 22.6 g of lead will be as follows.

$\frac{22.6 g}{3.14 \times 10^{-22}}$

= $7.197 \times 10^{22} atoms$

Thus, we can conclude that there are $7.197 \times 10^{22} atoms$ of lead are present.

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2 years ago

How is 8.2 x 10^4 - 6.3 x 10^3 written in scientific notation

ser-zykov [4K]

Answer:

= 7.57 × 104

(scientific notation)

= 7.57e4

(scientific e notation)

= 75.7 × 103

(engineering notation)

(thousand; prefix kilo- (k))

Explanation:

Just in case this is all of them

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2 years ago

What is the colour of litmus in a solution of ammonium hydroxide?

sammy [17]

Answer:

Red litmus turns blue

Explanation:

Hope it helps

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2 years ago

you see a coin at the bottom of a fountain of water but when you reach for it it is in another place than it appears to be

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Objects in the fountain appear to be somewhere but isnt

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