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
Wewaii [24]
3 years ago
13

You have a 15.0 gram sample of gold at 20.0°C. How much heat does it take to raise the temperature to 100.0°C?

Chemistry
1 answer:
Nadusha1986 [10]3 years ago
7 0

Answer:

=154.8 J

Explanation:

The rise in temperature is contributed by the change in temperature.

Change in enthalpy = MC∅,  where M is the mass of the substance, C is the specific heat capacity and ∅ is the change in temperature.

Change in temperature = 100.0°C-20.0°C=80°C

ΔH=MC∅

The specific heat capacity of gold= 0.129 J/g°C

ΔH= 15.0g×0.129J/g°C×80°C

=154.8 J

You might be interested in
What is the mass of sodium in 3 moles of sodium chloride
SashulF [63]

4.00 moles of sodium has a mass of 91.96 grams.

To find an element's molar mass, you can use its atomic weight.

8 0
3 years ago
An atom of oxygen has atomic of 8 and a mass number of 18. How many of each type of subatomic particle doe it contain?
Tju [1.3M]
An atom of Oxygen. Contains:

Protons = 8
Electrons = 8

Neutrons = Mass number - Number of protons = 18 - 8 = 10

Neutrons = 10.
7 0
3 years ago
Which family in the periodic table has elements that are silvery and lustrous?
IrinaVladis [17]
The correct answer is A. Alkali metals.
I hope this helped
6 0
3 years ago
Read 2 more answers
50 extra if correct !!
leva [86]

Answer:

A.

Explanation:

the gradual movement of the continents across the earth's surface through geological time.

7 0
3 years ago
How much energy is used to heat 250 g of ice from –15°C to steam at 105°C? (Hint: 5 steps, all positive)
lianna [129]

Answer:

Explanation: Q1 = mc(ice) ΔT (ice warms)

Q2 = ms (ice melts)

Q3 = mc((water) ΔT (water warms)

Q4 = mr (water boils)

Q5 = mc(vapour)ΔT

7 0
2 years ago
Other questions:
  • How many protons and electrons are present in the mg2+ ion?
    5·1 answer
  • How many grams of calcium would be a typical amount in a 60-kg adult?
    15·2 answers
  • What are the hazards, if any of the reactants AgNO3, and K2CrO4?
    7·1 answer
  • How do the bubbles in fizzy drinks appear in the drink?
    6·1 answer
  • Which one is the answer... a, b, or c?
    15·1 answer
  • Roland is measuring a physical property of an object. He records the measurement:
    5·1 answer
  • CHECK MY RECENT QUESTION HELP ME ASAP
    11·1 answer
  • What type of intermolecular force exist between H2O and Br2
    6·1 answer
  • What evidence from the experiment shows that conduction occurred? In your answer, be sure to include the materials involved in t
    6·2 answers
  • Which of the following correctly describes what happens to the kinetic energy of water when it changes from steam to a
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!