A 65.0-gram sample of some unknown metal at 100.0° C is added to 100.8 grams of water at 22.0° C. The temperature of the water rises to 27.0° C. If the specific heat capacity of liquid water is 4.18 J/ (°C × g), what is the specific heat of the metal?

Answers

Answer 1

Answer: We do a heat balance to solve this:
(m cp ΔT)water = -(m cp ΔT)metal
100.8 (4.18) (27 - 22) = -65 (cp)(27-100)
cp = 100.8 (4.18) (27 - 22) / (-65 (27-100))
cp = 0.44 J/ (°C × g)

The specific heat of the metal is 0.44 J/ (°C × g)

Related Questions

Which statement best describes why carbon can form a wide variety of organic compounds?Each carbon atom ionically bonds with atoms of carbon, hydrogen, oxygen, and nitrogen. Each carbon atom covalently bonds with atoms of carbon, hydrogen, oxygen, and nitrogen. Each carbon atom ionically bonds with atoms of oxygen and nitrogen. Each carbon atom covalently bonds with atoms of oxygen and nitrogen.
As a Ca atom undergoes oxidation to Ca2+, the number of neutrons in its nucleus(1) decreases(2) increases(3) remains the same
The compounds KNO3 and NaNO3 are soluble in water.55 Compare the entropy of 30. grams of solid KNO3 at 20.°C with the entropy of 30. grams of KNO3 dissolved in 100. grams of water at 20.°C. [1] 56 Explain why the total thermal energy of a sample containing 22.2 grams of NaNO3 dissolved in 200. grams of water at 20.°C is greater than the total thermal energy of a sample containing 11.1 grams of NaNO3 dissolved in 100. grams of water at 20.°C. [1] 57 Compare the boiling point of a NaNO3 solution at standard pressure to the boiling point of water at standard pressure. [1]
In a _________the molecules are very close together
The first person to use the term "atom" was _____. Dalton Democritus Aristotle the Egyptians

Why do you think Robert Hooke used the term "cell" to describe what he saw

Answers

Answer:

prison cells

Explanation:

Robert hook thought of prison cells when he first was the cells

Answer:

Robert Hooke called what he saw a cell because it reminded him of the cells in a monastery.

I hope this helps you

Which formulas represent two polar molecules?(1) CO2 and HCl (3) H2O and HCl
(2) CO2 and CH4 (4) H2O and CH4

Answers

Answer is: 3) H2O and HCl.

Polar molecules are water (H₂O) and hydrochloric acid (HCl).

Nonpolar molecules are carbon(IV) oxide (CO₂) and methane (CH₄).

Carbon(IV) oxide is nonpolar because CO₂ is linear molecule and the oxygen atoms are symmetrical (bond angles 180°).

Water is polar because of the bent shape of the molecule.

Hydrochloric acid has polar covalent chemical bond where hydrogen has oxidation umber +1 and chlorine oxidation number -1.

In molecule of methane (CH₄) all the atoms around the central element (carbon) are equivalent (four hydrogens) and it has a net dipole moment of 0 (vectors of dipole moments cancel each other, dipole moment is zero).

The answer to ur question would acutually be number 3 H20 and HCI hope i helped

Given the reaction: HC2H3O2(aq) + H2O ↔ H3O+(aq) + C2H3O2-(aq) When the reaction reaches a state of equilibrium, the concentrations of the reactants 1. are less than the concentrations of the products 2. are equal to the concentrations of the products 3. begin decreasing 4. become constant

Answers

The correct answer for the question that is being presented above is this one: "2. are equal to the concentrations of the products." Given the reaction: HC2H3O2(aq) + H2O ↔ H3O+(aq) + C2H3O2-(aq) When the reaction reaches a state of equilibrium, the concentration of product is equal yo the reactant.

Answer:

Explanation:

The concentration of a solid or a liquid is essentially constant at equilibrium, because the forward and reverse reaction rates are equal.

(you got this dw :) )

Which of these elements has four total electrons in its outer p orbitals? A) barium (Ba)
B) nitrogen (N)
C) silicon (Si)
D) sulphur (S)

Answers

SulphurS 161s22s22p63s23p4

The element that has four total electrons in its outer P orbitals is

Sulphur (s) (answer D)

Sulphur is in group 16 and period 3 in the periodic table therefore Sulphur is in atomic number 16.

Sulphur (S) electronic configuration is 1S2 2S2 2P6 3S2 3P4 or [Ne] 3S2 3P4 therefore the 3P4 subshell of sulphur has only 4 electrons.

Which statement best describes the pH of pure watera. It is neutral because the concentration of hydronium ions equals that of hydroxide ions
b. it is neutral because the pure liquid contains neither hydronium ions not hydroxide ions
c. it is acidic because it has a hydronium ion concentration of 1.0 x 10-7 M
d. its basic because it has a hydroxide ion concentration of 1.0 x 10-7 M

Answers

A is correct. The balance creates H2O

Answer:

the answer is a. It is neutral because the concentration of hydronium ions equals that of hydroxide ions

Explanation:

25.367 + 15.08 sig fig

Answers

Answer: I think the answer is 40.45 please let me know if it's wrong

Other Questions

Water is initially present in a state where its molecules are far apart. During a change of state, its molecules slow down. Which change of state has most likely taken place?

During a scientific investigation, which step will a scientist perform first?

A rock weighing 75.0g is placed in a graduated cylinder displacing the volume from 31.4 ml to 36.5ml. What is the density of the rock in grams /cubic centimeter.

Which of the following is a properly written formula for a compound between copper and bromine? CuBR CUBR CuBr CUBr