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2 years ago

How many sulfur atoms are in 3.7 mol of SO2? × 10 S atoms

Chemistry

1 answer:

Allisa [31]2 years ago

8 0

Answer: 22.3 *10^23 S atoms

Explanation:

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Why doesn't all soil look and feel the same? List 3 reasons

Katen [24]

Answer:

all soil are also different due to how they were form

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2 years ago

In Natural selection, individuals whose unique characteristics are well-suited for an environment tend to survive and produce mo

Luden [163]

Answer:

True

Explanation:

True. If an animal has attributes to it that help it survive better in an environment, it will survive better than its counterparts who do not have this attribute. More survival = More offspring

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2 years ago

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4 Weathering Assessment

alexira [117]

Answer:

This is an example of chemical change because the Kool aid dissolved and turned the water red

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2 years ago

The enthalpy of solution (dissolving) of sodium hydroxide is given below. Determine the change in temperature of a coffee cup ca

geniusboy [140]

Answer:

The change in temperature of a coffee cup calorimeter is 8.87°C.

Explanation:

Volume of the water = V = 150 g

Density of the water , d =1.0 g/mL

Mass of the water = M

$M=d\times V=1.00 g/mL\times 150 ml =150.0 g$

Mass of solution = m = M = 150.0 g

$NaOH(s)\rightarrow NaOH(aq),\Delta H =-44.51 kJ/mol$

Moles of NaOH = $\frac{5.00 g}{40 g/mol}=0.125 mol$

Energy released when 0.125 moles of NaOH added in water = Q

$Q=0.125 moles\times (-44.51 kJ/mol)=-5.5638 kJ=-5,563.8 J$

1 kJ = 1000 J

Heat gained by water = Q' = -Q ( conservation of energy)

$Q'= 5,563.8 J$

Specific heat of solution = c = 4.184 J/g°C

Change in temperature of the solution = $\Delta T$

$Q'=mc\times \Delta T$

$5,563.8 J=150.0 g\times 4.184 J/g^oC\times \Delta T$

$\Delta T=\frac{5,563.8 J}{150.0 g\times 4.184 J/g^oC}=8.87^oC$

The change in temperature of a coffee cup calorimeter is 8.87°C.

7 0

2 years ago

A change in 1 degree Celsius is = a change in 1 Kelvin<br> True<br> False

EleoNora [17]

Answer:

true

Explanation:

because I'm smart yes yes

5 0

2 years ago