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
Brilliant_brown [7]
3 years ago
15

Please help; chemistry

Chemistry
1 answer:
Diano4ka-milaya [45]3 years ago
4 0

Answer:

204/82 Pb ( /1.37%)

Explanation:

lead

You might be interested in
During which phase change does the entropy of a sample of H2O increase?
Bezzdna [24]

Answer: 3. H2O(l) -> H2O(g)

Explanation: Entropy is a measure of the randomness or disorder a substance. Gasses have the greatest amount of entropy and solids have the least amount of entropy. The entropy of a sample of H2O increases as liquid water evaporates and changes to a gas.

3 0
3 years ago
How many moles are in 3.75 x 10^25 atoms of Tungsten?
DanielleElmas [232]

Answer:

62.29 moles

Explanation:

See attached image

3 0
3 years ago
How many centuries are in a foot ?
N76 [4]

Answer:

30 centimeters

Explanation:

I really hope you meant centimeters or I'm gonna look pretty dumb

5 0
3 years ago
Read 2 more answers
Which shared derived characteristic do reptiles, marsupials, and dogs have?
stepan [7]
Retractable claws as all of options above have in common are the claws
4 0
3 years ago
Read 2 more answers
A student obtained an unknown metal sample that weighed 65.3 g and at a temperature of 99.8oC, he placed it in a calorimeter con
lawyer [7]

Answer:

0.377 J/gºC

Explanation:

From the question given above, the following data were obtained:

Mass of metal (Mₘ) = 65.3 g

Initial temperature of metal (Tₘ) = 99.8 °C

Mass of water (Mᵥᵥ) = 43.7 g

Initial temperature of water (Tᵥᵥ) = 25.7 °C

Equilibrium temperature (Tₑ) = 34.5 °C

Specific heat capacity of water (Cᵥᵥ) = 4.18 J/gºC

Specific heat capacity of metal (Cₘ) =?

The specific heat capacity of metal can be obtained as illustrated below:

Heat lost by metal = heat gained by water.

MₘCₘ(Tₘ – Tₑ) = MᵥᵥCᵥᵥ(Tₑ – Cᵥᵥ)

65.3 × Cₘ (99.8 – 34.5) = 43.7 × 4.18 (34.5 – 25.7)

65.3Cₘ × 65.3 = 182.666 × 8.8

4264.09Cₘ = 1607.4608

Divide both side by 4264.09

Cₘ = 1607.4608 / 4264.09

Cₘ = 0.377 J/gºC

Therefore the specific heat capacity of the metal is 0.377 J/gºC

3 0
3 years ago
Other questions:
  • 0.274 is equal to what in mL?
    14·1 answer
  • Which atom in each pair that has the largest atomic radius.
    14·1 answer
  • Atomic oxygen would most likely form its most stable monatomic ion when it: 1. elevates one electron from the s orbital to a p o
    12·1 answer
  • If a chemist has 2.3 moles of arsenic (as) that has a molar mass of 74.92 g/mol, which would be the best way to find out how man
    8·1 answer
  • What are the noble gases on the periodic table?
    13·1 answer
  • What is the pressure exerted by 2.3 mol of a gas with a temperature of 40. °C and a volume of 3.5 L?
    8·1 answer
  • The sudden disappearance of a type of fossil record is evidence of
    14·1 answer
  • This data was collected after conducting an experiment about the amount, in liters, of water a specific plant needs per month. A
    10·2 answers
  • Is baking powder Litmus acid or base
    7·1 answer
  • How many moles of mercury are 4.000 x 1022 atoms of mercury?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!