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lutik1710 [3]
3 years ago
11

How many atoms of O are there?

Chemistry
2 answers:
ser-zykov [4K]3 years ago
8 0
1 .....................................

......
Ann [662]3 years ago
6 0

Answer:

4?

Explanation:

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Which has more thermal energy, 500g of ice or 500g of steam? explain your answer.
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Steam because steam comes from water which the energy makes it into steam
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4 years ago
students used a balance and a graduated cylinder to collect the data shown in table 7. calculate the density of the sample. if t
Licemer1 [7]

Answer:

              Percentage error  =  1.88 %

Solution:

Data Given:

                 Mass of Sample  =  20.46 g

                 Volume of Sample  =  43.0 mL - 40.0 mL  =  3.0 mL

Formula Used:

                 Density  =  Mass / Volume

Putting values,

                 Density  =  20.46 g /  3.0 mL

                 Density  =  6.82 g.mL⁻¹

Percentage Error:

                 Experimental Value  =  6.82 g.mL⁻¹

                 Accepted Value  =  6.95 g.mL⁻¹

                 = 6.82 g.mL⁻¹ / 6.95 g.mL⁻¹ × 100  =  98.12 %

                 Percentage Error  =  100 % - 98.12 %

                Percentage error  =  1.88 %

3 0
3 years ago
Which gas law states that the pressure of a gas decreases when volume is increased and the temperature is unchanged
Nesterboy [21]

Answer: Boyle's law

Explanation: It states that pressure of a gas is inversely proportional to the volume of a gas at constant temperature.

P∝\frac{1}{V}       at constant temperature

or If the pressure of gas is decreased, the volume increases if the temperature is unchanged and If the pressure of gas is increased, the volume decreases if the temperature is unchanged.

P_1V_1=P_2V_2

3 0
4 years ago
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Name the compound formed when a copper cation has a 2+ charge combined with a bromine anion that has a 1- charge.
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Answer: The compound is called copper (II) bromide or cupric bromide

Explanation:

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Which two kinds of information describe weather and not climate?
Fynjy0 [20]

Answer: b & c

Explanation: A-P-E-X

5 0
3 years ago
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