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
AURORKA [14]
3 years ago
10

What is the unknown metal if the temperature of a beaker of 100ml of water was raised 17c to 19 c when 21 grams of the metal at

122.5c was placed into the beaker ?
Chemistry
1 answer:
horrorfan [7]3 years ago
4 0

Answer:

The metal has a heat capacity of 0.385 J/g°C

This metal is copper.

Explanation:

<u>Step 1</u>: Data given

Mass of the metal = 21 grams

Volume of water = 100 mL

 ⇒ mass of water = density * volume = 1g/mL * 100 mL = 100 grams

Initial temperature of metal = 122.5 °C

Initial temperature of water = 17°C

Final temperature of water and the metal = 19 °C

Heat capacity of water = 4.184 J/g°C

<u />

<u>Step 2: </u>Calculate the specific heat capacity

Heat lost by the metal = heat won by water

Qmetal = -Qwater

Q = m*c*ΔT

m(metal) * c(metal) * ΔT(metal) = - m(water) * c(water) * ΔT(water)

21 grams * c(metal) *(19-122.5) = -100 * 4.184 * (19-17)

-2173.5 *c(metal) = -836.8

c(metal) = 0.385 J/g°C

The metal has a heat capacity of 0.385 J/g°C

This metal is copper.

You might be interested in
A brass doorknob has a mass of 80grams and a volume of 10cubic centimeters. What is its density?
ki77a [65]

Density = mass/volume = 80 g/10cm³ = 8 g/cm³

5 0
3 years ago
Oxygen is a reactant of___(1)___while being the product for___(2)___.
yuradex [85]

Answer:

Oxygen is a reactant of cellular respiration, while being the product for photosynthesis

Explanation:

Photosynthesis

carbon + water + sunlight -> oxygen and glucose

Cellular respiration

oxygen + glucose -> carbon + water + ATP

6 0
2 years ago
Which happens when a reversible reaction reaches a state of chemical equilibrium?
Trava [24]

Explanation:

Reversible reactions that happen in a closed system eventually reach equilibrium. At equilibrium, the concentrations of reactants and products do not change. But the forward and reverse reactions have not stopped - they are still going on, and at the same rate as each other.

5 0
3 years ago
Read 2 more answers
According to Newton's first law of motion what is required to make an object at rest move
yanalaym [24]
<span>An object at rest will stay at rest unless acted upon by a unbalanced force. 

</span>
8 0
3 years ago
Read 2 more answers
PLEASE HELP ME I BEG YOU
VladimirAG [237]

The average kinetic energy of 1 mole of a gas at -32 degrees Celsius is:
 
3.80 x 103 J

The relationship between volume and temperature of a gas, when pressure and moles of a gas are held constant, is: V*T = k.

FALSE

The relationship between moles and volume, when pressure and temperature of a gas are held constant, is: V/n = k. We could say then, that:
If the moles of gas are tripled, the volume must also triple.


 If the temperature and volume of a gas are held constant, an increase in pressure would most likely be caused by an increase in the number of moles of gas.

TRUE

If the vapor pressure of a liquid is less than the atmospheric pressure, the liquid will not boil.

TRUE


35 - AB

36 -  BD

33 - true

34 - False

20 - 6

21 - orthohombic


4 0
3 years ago
Other questions:
  • Which of the following is a solution? Dirt An alloy Wood Plastic
    15·2 answers
  • What is 85% of 352???????????????????
    6·1 answer
  • What is the mass of 2.25 moles of manganese(lv) sulfide(MnS2)
    8·2 answers
  • Explain what lattice energy is and how it affects the properties of ionic compounds. Describe the general properties of ionic co
    14·2 answers
  • The property of water in which it attaches to another surface is known as: *
    15·1 answer
  • What is magnesium used for in its pure form
    15·1 answer
  • How many moles of NaOH are in a 50.0 g sample of NaOH?
    7·2 answers
  • The octet rule is the basis for the stability of the atom. According to this rule, the outermost shell of the atom must contain
    13·1 answer
  • What is the pH of a solution with a 3.2 x 10−6 M hydronium ion concentration?
    9·1 answer
  • What is the density of an object if its mass is 10 g and a volume of 2 mL?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!