All categories

3 years ago

What is the approximate mass of 25 cm3 of silver, if the density is 10.5 g/cm3?

Chemistry

2 answers:

Ainat [17]3 years ago

7 0

Answer:

Mass, m = 260 grams

Explanation:

It is given that,

Density of silver, $d=10.5\ g/cm^3$

Volume of the silver, $V=25\ cm^3$

We need to find the mass of a piece of silver. The formula for the density is given by :

$d=\dfrac{m}{V}$

$m=d\times V$

$m=10.5\ g/cm^3\times 25\ cm^3$

m = 262.5 g

m = 260 grams

So, the mass of the piece of the silver is 260 grams. Hence, this is the required solution.

Lunna [17]3 years ago

6 0

25 x 10.5 = 262.5

So the approx. is 260 g which is answer D.

You might be interested in

Students in a science class learn that groundwater is an important source of drinking water for many communities. They construct

sveticcg [70]

Groundwater is also one of our most important sources of water for irrigation from septic tanks and toxic chemicals from underground storage tanks and leaky landfills ... Drinking contaminated groundwater can have serious health effects. If there is a leak, these contaminants can eventually make their way down

5 0

3 years ago

If salt is dissolved in water, water serves as the:

NemiM [27]

B. solvent

solute is the substance being dissolved

5 0

3 years ago

What are the two ways light moves through space? for astronomy the solar system

Mariana [72]

Answer:

The Solar System moves through the galaxy with about a 60° angle between the galactic plane and the planetary orbital plane. The Sun appears to move up-and-down and in-and-out with respect to the rest of the galaxy as it revolves around the Milky Way

Explanation:

Hope you like it

7 0

2 years ago

Read 2 more answers

The rate constant for the second-order reaction: 2NOBr(g) → 2NO(g) + Br2(g) is 0.80/(M · s) at 10°C. Starting with a concentrati

a_sh-v [17]

Answer : The concentration of NOBr after 95 s is, 0.013 M

Explanation :

The integrated rate law equation for second order reaction follows:

$k=\frac{1}{t}\left (\frac{1}{[A]}-\frac{1}{[A]_o}\right)$

where,

k = rate constant = $0.80M^{-1}s^{-1}$

t = time taken = 95 s

[A] = concentration of substance after time 't' = ?

$[A]_o$ = Initial concentration = 0.86 M

Now put all the given values in above equation, we get:

$0.80=\frac{1}{95}\left (\frac{1}{[A]}-\frac{1}{(0.86)}\right)$

[A] = 0.013 M

Hence, the concentration of NOBr after 95 s is, 0.013 M

4 0

3 years ago

Wich are the disadvantages of skimming oil spills?

sweet-ann [11.9K]

Oil is sucked up through wide floating heads and pumped into storage tanks. Although suction skimmers are generally very efficient, one disadvantage is that they are vulnerable to becoming clogged by debris and ice and require constant skilled observation.

4 0

3 years ago