All categories

3 years ago

How much energy is required to raise 10 grams of water by 10 degrees Celsius? (in Joules)

Chemistry

2 answers:

Georgia [21]3 years ago

4 0

Answer:

420j

Explanation:

Heat capacity =10*4.2*10

=420j

miv72 [106K]3 years ago

3 0

Answer: The amount of heat required by water is 418.6 J

Explanation:

To calculate the heat absorbed by water, we use the equation:

$q=mc\Delta T$

where,

q = heat absorbed

m = mass of water = 10 g

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

$\Delta T$ = change in temperature = 10°C

Putting values in above equation, we get:

$q=10g\times 4.186J/g^oC\times 10^oC\\\\q=418.6J$

Hence, the amount of heat required by water is 418.6 J

You might be interested in

What is the number of protons and electrons in a neutral atom of Lithium?

nadya68 [22]

If you look at the periodic table you will see the atomic number (the smaller number) which is 3. that identifies how many protons there are. since the lithium is neutral that means there’s a same amount of electrons.

therefore there’s 3 electrons and 3 protons

3 0

3 years ago

What is a disavanege for renewable solor power

Zina [86]

1. Cost (fairly high).
2. Weather Dependent.
3. Solar Energy Storage Is Expensive.
4. Uses a Lot of Space.
5. Associated with Pollution.

6 0

3 years ago

Electrical current or electrical discharge

Andru [333]

I don't know what you are talking about but if you are asking about the difference between electric discharge and electric current then;
The electric current is the amount of electrons or charges passing through a conductor per units of time. 1 ampere = 1 coulombs / 1 second.

Electric discharge is the consequence of disrupting an isolator (for example, air), thus causing a sudden flow of electricity.

4 0

3 years ago

Read 2 more answers

Student mixed 25.0 mL of 0.100 M glucose, 15.0 mL of 0.500 M NaCl and 450. mL water. What are concentrations in his solution?

3241004551 [841]

The question is incomplete, here is the complete question:

Student mixed 25.0 mL of 0.100 M glucose, 15.0 mL of 0.500 M NaCl and 450. mL water. What are concentrations in his solution?

A. 5.10 mM glucose, 15.3 mM NaCl

B. 5.56 mM glucose, 16.7 mM NaCl

C. 0.556 mM glucose, 0.167 mM NaCl

D. 0.222 mM glucose, 1.11 mM NaCl

E. 0.556 mM glucose, 0.0667 mM NaCl

Answer: The concentration of glucose and NaCl in the solution is 5.10 mM and 15.3 mM respectively.

Explanation:

To calculate the number of moles for given molarity, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$ .....(1)

For glucose:

Molarity of glucose solution = 0.100 M

Volume of solution = 25.0 mL

Putting values in equation 1, we get:

$0.100M=\frac{\text{Moles of glucose}\times 1000}{25.0}\\\\\text{Moles of glucose}=\frac{(0.100\times 25.0)}{1000}=0.0025mol$

For NaCl:

Molarity of NaCl solution = 0.500 M

Volume of solution = 15.0 mL

Putting values in equation 1, we get:

$0.500M=\frac{\text{Moles of NaCl}\times 1000}{15.0}\\\\\text{Moles of NaCl}=\frac{(0.500\times 15.0)}{1000}=0.0075mol$

Total volume of solution = 25.0 + 15.0 + 450. = 490. mL

Now, calculating the concentration of glucose and NaCl in the solution by using equation 1:

Using conversion factor: 1 M = 1000 mM

For glucose:

Moles of glucose = 0.0025 moles

Volume of solution = 490. mL

Putting values in equation 1, we get:

$\text{Concentration of glucose}=\frac{0.0025\times 1000}{490}\\\\\text{Concentration of glucose}=0.0051M=5.10mM$

For NaCl:

Moles of NaCl = 0.0075 moles

Volume of solution = 490. mL

Putting values in equation 1, we get:

$\text{Concentration of NaCl}=\frac{0.0075\times 1000}{490}\\\\\text{Concentration of NaCl}=0.0153M=15.3mM$

Hence, the concentration of glucose and NaCl in the solution is 5.10 mM and 15.3 mM respectively.

8 0

3 years ago

How are petrified fossils similar to preserved remains? How are they different?

konstantin123 [22]

Well, both fossils and preserved remains retain the shape and form of the remains, but fossils do not actually retain the matter that made up the remains, instead, bones and tissues (usually just bones) have been replaced with stone.

4 0

3 years ago

Read 2 more answers