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
Dima020 [189]
2 years ago
14

I NEED HELP THIS IS DUE TMR!

Chemistry
1 answer:
butalik [34]2 years ago
3 0

Answer:

The density of copper is 8.9 grams per cubic centimeter.

Explanation:

There is a writing mistake in statement, correct form is written below:

<em>A 124.6 grams sample of copper has a volume of 14 cubic centimeters. What is the density of copper?</em>

Let suppose that mass of the copper sample is distributed uniformly in its volume, then we shall use the following definition of density (\rho), in grams per cubic centimeter:

\rho = \frac{m}{V} (1)

Where:

m - Mass, in grams.

V - Volume, in cubic centimeters.

If we know that m = 124.6\,g and V = 14\,cm^{3}, then the density of the sample of copper is:

\rho = \frac{m}{V}

\rho = 8.9\,\frac{g}{cm^{3}}

The density of copper is 8.9 grams per cubic centimeter.

You might be interested in
The molar mass of an element is the mass of one
allochka39001 [22]

Answer:

  • <em>The molar mass of an element is the mass of </em><u>one mole of atoms of the element.</u>

Explanation:

<em>The molar mass of an element </em>is its atomic mass, i.e.  the mass in grams of one mole of atoms of the element.

Remember 1 mol is approximately 6.022 × 10²³.

So, 1 mol of atoms is 6.022 × 10²³ atoms.

The molar mass is an average: it is the weighted average mass of the natural isotopes of the element, taking into account their relative abundance.

For example, the molar mass or atomic mass of carbon is 12,0107 g/mol, instead of 12.0000, becasue carbon exists in several forms (isotopes), and so the weighted average is not a whole number.

7 0
2 years ago
What was observed when positively charged particles were radiated onto a gold atom during Rutherford's experiment because of thi
trapecia [35]

Answer:

He was happy:)

Explanation:

3 0
3 years ago
An atom or ion has 41 neutrons, 36 protons, and 36 electrons. Identify the clement symbol, and determine the mass
Paul [167]

The atom is krypton and its symbol is Kr.

the mass number is 41 + 36 = 77

its charge is 0 as it is a noble gas.

7 0
3 years ago
Explain the term contact force and give examples​
aliya0001 [1]

Answer & Explanation:

In physics, a contact force is a force that acts at the point of contact between two objects, in contrast to body forces. Contact forces are described by Newton's laws of motion, as with all other forces in dynamics. Contact force is the force in which an object comes in contact with another object. Contact forces are also direct forces. Contact forces are ubiquitous and are responsible for most visible interactions between macroscopic collections of matter. Pushing a car up a hill or kicking a ball or pushing a desk across a room are some of the everyday examples where contact forces are at work. In the first case the force is continuously applied by the person on the car, while in the second case the force is delivered in a short impulse.

3 0
3 years ago
I need yall help with this one and i can make yall brilientist if u get it right plus yall get 50 points
mixas84 [53]

Answer:

D

Explanation:

6 0
2 years ago
Read 2 more answers
Other questions:
  • How do you work out the relative atomic mass?
    8·1 answer
  • Consider the following equilibrium:H2CO3(aq) + H2O(l) H3O+(aq) + HCO3-1(aq).What is the correct equilibrium expression?
    8·1 answer
  • Lead is listed below zinc in the activity series.
    15·2 answers
  • A sample of the element lead has a mass of 63.466 g. In units of milliliters what will be the volume of the sample at 25°C?
    15·2 answers
  • URGENT!!!!???! Please respond in less than 5 minutes!??!
    9·1 answer
  • A football player kicks a 0.94 kg football with a force of 2.4 N.
    9·2 answers
  • Charles Darwin's theory of evolution describes how species evolve due to natural selection. Which of these is NOT evidence of na
    12·1 answer
  • How much sulphur dioxide is produced on complete combustion of 1 kg of coal containing 6.23percent sulphur?
    10·1 answer
  • Chemical molecules that impart positional information through their concentration gradient are called
    11·2 answers
  • The _______ atom in a water molecule points toward the sodium ion because its partial _______ charge is attracted to the sodium
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!