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
yawa3891 [41]
3 years ago
15

How much energy does it take to raise the temperature of 80g of aluminium 15 degree Celsius

Chemistry
2 answers:
iris [78.8K]3 years ago
6 0

Answer :The specific heat of aluminium tells you the amount of energy needed to increase the temperature of 1 g of aluminium by 1∘C . You can thus say that in order to increase the temperature of 1 g of aluminium by 1∘C , you need to supply it with 0.214 cal of heat.

Explanation:

irinina [24]3 years ago
5 0

Answer:

\boxed {\boxed {\sf 1080 \ Joules}}

Explanation:

We are asked to calculate the energy needed to raise the temperature of 80 grams of aluminum by 15 degrees Celsius.

We are given the mass and change in temperature, so we will use the following formula:

q=mc\Delta T

The mass is 80 grams, the change in temperature is 15 degrees Celsius, and aluminum's specific heat capacity is 0.9 Joules per gram degree Celsius.

  • m=80 g
  • ΔT= 15°C
  • c= 0.9 J/g °C

Substitute the values into the formula.

q= (80 \ g)(0.9 \ J/g \textdegree C)(15 \textdegree C)

Multiply the first two numbers together. The units of grams will cancel out.

q= (80  \ g * 0.9 \ J/g \textdegree C)(15 \textdegree C)

q= (80   * 0.9 \ J/\textdegree C)(15 \textdegree C)

q= 72  \ J / \textdegree C (15 \textdegree C)

Multiply again. This time, the units of degrees Celsius cancel.

q= 72 \ J * 15

q= 1080 \ J

Raising the temperature of 80 grams of aluminum by 15 degrees Celsius requires <u>1080 Joules of energy.</u>

You might be interested in
A chemist combined 0.440 L of an unknown calcium solution with an excess of ammonium chromate. This resulted in the precipitatio
Rina8888 [55]

The concentration of the original calcium ions is 0.005 M

<h3>What is concentration?</h3>

The term concentration has to do with the amount of substance in solution. We know that the concentration can be measured in a lot of units such as mole/litre, grams per litre, percentage and so on.

As such we have the equation;

Ca^2+(aq) + (NH4)2CrO4(aq) --------> CaCrO4(s) + 2NH4^+(aq)

Number of moles of the precipitate = 346.7 * 10^-3 g/156 g/mol

= 0.0022 moles

Now;

1 mole of Ca^2+ produces 1 mole of CaCrO4 hence 0.0022 moles of CaCrO4 was produced by  0.0022 moles of CaCrO4.

Given that the volume of the solution is  0.440 L, the concentration of the solution is;   0.0022 moles/0.440 L

= 0.005 M

Learn more about molarity:brainly.com/question/8732513

#SPJ1

6 0
1 year ago
What are the Lewis definitions of an acid and a base? In what way are Bronsted definitions? they more general than the In terms
kati45 [8]

Explanation:

Lewis definition of Acids and Bases

Chemical species which are capable of accepting electron pairs or donating protons are called Lewis acid.

Chemical species which are capable of donating electron pairs or accepting protons are called Lewis base.

Bronsted definition of acids and bases

Chemical species which are capable of donating H+ are called Bronsted acids.

Chemical species which are capable of accepting H+ are called Bronsted bases.

So all Bronsted acids are Lewis acids but all Lewis acids are not Bronsted acids.

For a chemical species to behave as Lewis acid, they must have:

  • Incomplete octet
  • Double bond
  • Vacant d-orbitals

For example, in BF3, octet of boron is incomplete, so it can accept a pair of electron and behaves as Lewis acid.

For a chemical species to behave as Lewis base, they must have:

  • lone pair of electrons

For example, NH3 and OH, both N and O have lone pairs of electrons, hence behave as Lewis base.

4 0
3 years ago
Mexico City has an elevation of 7400 ft above sea level. Its normal atmospheric pressure is 589 mm Hg. At what temperature does
IRISSAK [1]
Given that the volume and amount  of water are kept constant,
P/T = constant
P₁/T₁ = P₂/T₂
Normal atmospheric pressure is 746 mmHg and normal boiling point of water is 100 °C.
746/100 = 589/T₂
T₂ = 79.0 °C
5 0
3 years ago
3. How did your hypothesis work out? What was surprising in this experiment?
MAXImum [283]

Answer:

Whats the hypothesis and the experiment?

Explanation:

I cant really help without context

3 0
3 years ago
A football was thrown 25m for a touchdown in 2.5s, How fast was the ball traveling?
Verizon [17]

Answer:

V=?

S=25m

t=2.5s

V=S/t

V=25/2.5

V=10m/s

So, the ball was traveling with the speed of 10m/s.

6 0
3 years ago
Other questions:
  • Among teenagers, what is the most commonly used substance?
    9·1 answer
  • What kind of chemical bonds are represented by the product in the following diagram?
    13·1 answer
  • Please help!!!! Look at the picture for the question.
    7·1 answer
  • Pressure gauge at the top of a vertical oil well registers 140 bars. The oil well is 6000 m deep and filled with natural gas dow
    12·1 answer
  • If angle ABE = 2n + 7 and angle EBF=4n-13,<br>find angle ABE.​
    13·1 answer
  • Nitrogen dioxide gas is produced by the reaction of nitrogen monoxide gas and oxygen gas .
    10·1 answer
  • Write the molecular and net ionic equations, including phases, for the reaction that occurs between aqueous sodium chloride, NaC
    5·2 answers
  • Which of the following molecules has a trigonal planar shape?​
    8·2 answers
  • How much sulphur dioxide is produced on complete combustion of 1 kg of coal containing 6.23percent sulphur?
    10·1 answer
  • Atoms of arsenic (As) are often added to silicon (Si) in a process called doping to change the conductivity of the silicon. How
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!