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miv72 [106K]
4 years ago
9

5.68 x 10^4 mL to L Express your answer to three sianificant fiqures and includ

Chemistry
1 answer:
olasank [31]4 years ago
3 0

Answer:

5.68 × 10⁴ mL = 56.8 L

Explanation:

Volume is defined as the amount of three-dimensional closed space. The SI unit of volume is cubic metre which is denoted by the symbol m³.

According to the metric system, other units of volume include: litre (L), millilitre (mL) and cubic centimetre (cm³).

Since, 1 mL = 0.001 L = 10⁻³ L

Therefore, 5.68 × 10⁴ mL = 5.68 × 10⁴ × 10⁻³ L = 5.68 × 10 L = 56.8 L

5.68 × 10⁴ mL = 56.8 L, has three non-zero significant figures.

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dsp73

Chemical bonds are formed or broken. This is true of a chemical change, but not a physical change. A physical change is usually something that you can see, such as changing of shape or form or staying the same.  However, because you cannot visibly see chemical bonds being formed or broken and because this would affect the chemical composition, it is not a physical change.

6 0
3 years ago
The density of iron is 7.8 g/cm3 and that of aluminum is 2.7 g/cm3. Using a balance, you find that a block of iron has the same
vazorg [7]

Answer:

1.The Aluminum block

2.its surroundings absorb energy from it.

Explanation:

In this question it is important to remember that density of an object is the mass of that object divided by its volume.

The expression applied here is density=mass/volume

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2.As water in an ice cube tray freezes, its surroundings absorb energy from it.When the water freezes, latent heat of freezing is given out to the surrounding.When water is freezing, it stays at a constant temperature of 0°C, the heat energy released ensures that there is no cooling past 0 °C.

8 0
3 years ago
How many moles contain 1.25x 10^15 molecules carbon dioxide?
IRISSAK [1]
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These units could be atoms that make up an element or molecules that make up a compound. CO₂ is a compound therefore its made of CO₂ molecules.
1 mol of CO₂ contains 6.022 x 10²³ molecules of CO₂
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then 1.25 x 10¹⁵ molecules of CO₂ make up - \frac{1.25 x 10¹⁵}{6.022 x 10²³}
Number of CO₂ moles present - 2.0756 x 10⁻⁹ mol of CO₂
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3 years ago
3.0 x 10 23 molecules of element Z have a mass of 38 g. What is the mass of 1 mole?
mylen [45]
Does this make sense ?

6 0
3 years ago
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