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weqwewe [10]
3 years ago
15

Complete this sentence. If mass remains the same while the volume of a substance ________, the density of the substance will____

___________.
Chemistry
1 answer:
9966 [12]3 years ago
4 0

Answer:

If mass remains the same while the volume of a substance changes, the density of the substance will also change.

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5 example of dilute solution
Dmitry_Shevchenko [17]

Answer:

Explanation:

tab water

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cup of orange juice

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6 0
3 years ago
Read 2 more answers
A space probe on the surface of mars sends a radio signal back to earth,a distance of 7.19 ×10⁷ km. Radio travel at the speed of
lys-0071 [83]

Answer:

240 seconds

Explanation:

Data Given:

Distance Radio travel to earth = 7.19 ×10⁷ km

Speed of this radio signal = 3.00 ×10⁸ m/s

Solution:

First convert Km to m

1 km = 1000 m

7.19 ×10⁷ km = 7.19 ×10⁷ x 1000 = 7.19 × 10¹⁰m

Formula used to calculate time

            Speed (S) = distance (d) / time (t)

rearrange above equation for time

            time (t) = distance (d) / Speed (S) . . . . . . . . .(1)

Put values in equation 1

            time (t) = 7.19 × 10¹⁰/ 3.00 ×10⁸ m/s

            time (t) = 240 s

So 240 seconds it take for the signal to reach the earth

6 0
4 years ago
How many bromine molecules are in 250 g of bromine? (R
Galina-37 [17]
Use the formula triangle for quantitive chemistry
5 0
4 years ago
How many moles are equal to 3.5 grams of beryllium
tamaranim1 [39]

Answer:

w

Explanation:

7 0
3 years ago
When 8.70 kJ of thermal energy is added to 2.50 mol of liquid methanol, it vaporizes. Determine the heat of vaporization in kJ/m
Anni [7]

Answer:

The heat of vaporisation of methanol is "3.48 KJ/Mol"

Explanation:

The amount of heat energy required to convert or transform  1 gram of liquid to vapour is called heat of vaporisation

When 8.7 KJ of heat energy is required to vaporize 2.5 mol of liquid methanol.

Hence, for 1 mol of liquid methanol, amount of heat energy required to evaporate the methanol is =   \frac{8.7}{2.5}KJ

 = 3.48 KJ

So, the heat of vaporization \delta H_{vap} = 3.48KJ/Mol

Therefore, the heat of vaporization of methanol is 3.48KJ/Mol

5 0
3 years ago
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