1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ray Of Light [21]
3 years ago
6

Work the following question out on your own sheet of paper and submit a picture of your work:

Chemistry
1 answer:
valina [46]3 years ago
7 0

Answer:

Heat  absorbed by water = 3985.26 j

Explanation:

Given data:

Mass of water = 75 g

Initial temperature = 20.0°C

Final temperature = 32.7°C

Specific heat of water  = 4.184 j/g.°C

Heat  absorbed by water = ?

Solution:

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

ΔT = 32.7°C - 20°C

ΔT = 12.7 °C

Q = 75 g ×4.184 j/g.°C ×12.7 °C

Q = 3985.26 j

You might be interested in
N2 + 3 H2 --> 2 NH3
Anna71 [15]

Answer:

4 moles of NH3 will be produced

Explanation:

The reaction expression is given as:

            N₂  +  3H₂  →  2NH₃

We have to check that the equation of the reaction is balanced.

 Then;

      if 2 mole of N₂ reacts;

 1 mole of N₂ will react with 3 mole of H₂ to produce 2 mole of NH₃

2 mole of N₂ will react with (2x3)mole of H₂ to produce (2x2)mole of NH₃

                                                    6mole of H₂ to produce      4 mole of NH₃

7 0
3 years ago
Your calculated density of aluminum is d = 2.69 g/cm3. Aluminum’s accepted density is 2.70 g/cm3. Without writing the "%" sign,
stepan [7]

Answer:

0.37 %

Explanation:

Given that:

Calculated density of aluminum = 2.69 g/cm³

Accepted density of aluminum = 2.70 g/cm³

Error\ percentage=\frac {|Accepted\ value-Calculated\ value|}{Accepted\ value}\times 100

Thus, applying values as:

Error\ percentage=\frac {|2.70-2.69|}{2.70}\times 100

<u>Percent error = 0.37 %</u>

7 0
3 years ago
Read 2 more answers
BRAINLIEST:
vekshin1
33 is the correct answer
8 0
2 years ago
What’s the physical properties of a molecular solid, in regards to its physical properties of formation?
Anastasy [175]
It has a fixed mass
it does not change with the shape of the container
it cannot be compressed
it has fixed atom and molecules and limited to very small displacement
only vibrational motion occur in the molecules of solid .
7 0
3 years ago
Why is large-scale nuclear fission a rare phenomenon on Earth? A. There isn't enough energy to start a chain reaction in nature.
siniylev [52]

The answer is; C

The radioisotopes in the interior of the earth are not in pure form and have many embedded impurities and are interspersed. Therefore when a neutron is released by a decaying atom, its chances of hitting another radioisotope atom (to continue the chain reaction) are lower than in a manmade nuclear reactor. This way, the radioactive chain reaction in the earth’s interior is not well sustained.


6 0
3 years ago
Read 2 more answers
Other questions:
  • What quantity, in grams, of methanol, CH3OH, is required to prepare a 0.244 m solution in 400. g of water?
    7·2 answers
  • What does the empirical formula of a compound describe? the type and number of atoms the type and ratio of atoms the number of a
    8·2 answers
  • How many grams of the molecule (C2H4O2) would be required to make 1 L of a 0.5 M solution of the molecule? (Carbon = 12, Oxygen
    7·1 answer
  • I WILL GIVE THE BRAINLIEST
    11·1 answer
  • In a cup of hot chocolate, what is the solvent? What is the solute? What is the solution?
    6·2 answers
  • How can chemical weathering make it easier for mechanical weathering to occur ? MY EXAMS!!!
    13·1 answer
  • Select the keyword or phrase that will best complete each sentence. law is a gas law that relates pressure and volume and states
    9·1 answer
  • If 6.75 g of NaOH are dissolved in 50.00 g of water and the temperature increases
    11·1 answer
  • A compound has a pH of 1 in solution, where it has completely lonized. The compound is a
    6·1 answer
  • The milliliter is a metric unit for
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!