What kind of scientist would study the effects of acid rain on marble statues?

If you combine 230.0 mL 230.0 mL of water at 25.00 ∘ C 25.00 ∘C and 120.0 mL 120.0 mL of water at 95.00 ∘ C, 95.00 ∘C, what is t

Thepotemich [5.8K]

Answer: The final temperature of the mixture is 49°C

Explanation:

To calculate the mass of water, we use the equation:

$\text{Density of substance}=\frac{\text{Mass of substance}}{\text{Volume of substance}}$

For cold water:

Density of cold water = 1 g/mL

Volume of cold water = 230.0 mL

Putting values in above equation, we get:

$1g/mL=\frac{\text{Mass of water}}{230.0mL}\\\\\text{Mass of water}=(1g/mL\times 230.0mL)=230g$

For hot water:

Density of hot water = 1 g/mL

Volume of hot water = 120.0 mL

Putting values in above equation, we get:

$1g/mL=\frac{\text{Mass of water}}{120.0mL}\\\\\text{Mass of water}=(1g/mL\times 120.0mL)=120g$

When hot water is mixed with cold water, the amount of heat released by hot water will be equal to the amount of heat absorbed by cold water.

$Heat_{\text{absorbed}}=Heat_{\text{released}}$

The equation used to calculate heat released or absorbed follows:

$Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})$

$m_1\times c\times (T_{final}-T_1)=-[m_2\times c\times (T_{final}-T_2)]$ ......(1)

where,

q = heat absorbed or released

$m_1$ = mass of hot water = 120 g

$m_2$ = mass of cold water = 230 g

$T_{final}$ = final temperature = ?°C

$T_1$ = initial temperature of hot water = 95°C

$T_2$ = initial temperature of cold water = 25°C

c = specific heat of water = 4.186 J/g°C

Putting values in equation 1, we get:

$120\times 4.186\times (T_{final}-95)=-[230\times 4.186\times (T_{final}-25)]$

$T_{final}=49^oC$

Hence, the final temperature of the mixture is 49°C

4 0

4 years ago

What units do chemists normally use for density of liquids, solids and gas? Explain the

Tanzania [10]

Answer:

We can define density as per unit volume. The SI unit to measure the density of solid, liquid and gas is kilogram per cubic metre (kg/m3) and in the centimeter–gram–second system of units (cgs unit) is gram per cubic centimeter (g/cm3).

Explanation:

3 0

3 years ago

PLS HURRY: 217 mL of Helium gas at 551oC is brought to standard temperature (0oC) while the pressure is held constant. What is t

krok68 [10]

71.9 mL is the answer

6 0

3 years ago

Does a hypothesis explains what the scientist thinks will happen during the experiment.

serious [3.7K]

Hypothesis is your opinion/ your thinking and yes, scientists have hypothesis before they do an experiment

Hope this helps!

3 0

3 years ago

A student trying to determine if a liquid was a mixture or a pure substance made several following observations. Which observati

Keith_Richards [23]

Answer:

Distillation

Explanation:

By using the method of distillation we'll identify if there is other properties of liquid by looking the temperatures,the ordor or the boiling point.

5 0

3 years ago