3 years ago

How many significant figures are in 1.00 L

Chemistry

1 answer:

likoan [24]3 years ago

6 0

Answer:

3 significant numbers

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Your answer is

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2 years ago

Dry ice is solid carbon dioxide. Instead of melting, solid carbon dioxide sublimes according to the following equation: CO2(s)→C

GREYUIT [131]

Answer:

$m=8.79kg$

Explanation:

First of all we need to calculate the heat that the water in the cooler is able to release:

$Q=\rho * V*Cp*\Delta T$

Where:

Cp is the mass heat capacity of water
V is the volume
$\rho$ is the density

$Q=1 g/cm^3 *15000 cm^3*4.184 \frac{J}{g*^{\circ}C}*(10-90)^{\circ}C$

$Q=-5020800 J=-5020.8 kJ$

To calculate the mass of CO2 that sublimes:

$-Q=\Delta H_{sub}*m$

Knowing that the enthalpy of sublimation for the CO2 is: $\Delta H_{sub}=571 kJ/kg$

$5020.8 kJ=571 kJ/kg*m$

$m=\frac{5020.8 kJ}{571 kJ/kg}=8.79kg$

6 0

3 years ago

Choose the correct statement about melting points. * Melting point can tell us if we have a mixture of compounds (for example, c

goldfiish [28.3K]

Answer: All of these statements are true

Explanation:

Melting point help us to determine if a mixture is pure or has impurities by the virtues of it melting range..

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3 years ago

A solution is classified as a weak base. Which of these could be the pH of the solution?

Pepsi [2]

Explanation:

The pH of a weak base falls somewhere between 7 and 10.

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3 years ago

1.34 milligrams is the same as _____ kg and _____g.

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Answer C is for kg and but it's .00134 for grams

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3 years ago

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