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
mezya [45]
3 years ago
15

Is a pencil a compound or an element and is a pencil heterogeneous or homogeneous

Chemistry
2 answers:
masya89 [10]3 years ago
6 0

Answer:

Pencil is an element and a heterogeneous mixture

Explanation:

miskamm [114]3 years ago
6 0

Answer:

Pencil is an element and a heterogeneous mixture

Explanation:

You might be interested in
Pls help the answers and questions r in the pic
soldier1979 [14.2K]
It would be 9*10 to the -3
6 0
2 years ago
Read 2 more answers
What is the Celsius temperature of 1 mole of a gas that has an average kinetic energy of 4,290 joules?
timofeeve [1]
Well the the answer is 70.8c but if you round it up it is 71c which I choice and got it correct so the answer is 71c

5 0
3 years ago
The molar heat of fusion of gold is 12.550 kJ mol–1. At its melting point, how much mass of melted gold must solidify to release
KATRIN_1 [288]

The mass of melted gold to release the energy would be  3, 688. 8 Kg

<h3>How to determine the mass</h3>

The formula for quantity of energy is given thus;

Q = n × HF

Where n represents number of moles

HF  represents  heat of fusion

To find the number of moles, we have

235.0 = n × 12.550

number of moles = \frac{235}{12. 550} = 18. 725 moles

Note that molar mass of Gold is 197g/ mol

Let's note that;

Number of moles = mass/ molar mass

Mass = number of moles × molar mass

Mass = 18. 725 × 197

Mass = 3, 688. 8 Kg

Thus, the mass of melted gold to release the energy would be  3, 688. 8 Kg

Learn more about molar heat of fusion here:

brainly.com/question/15634085

#SPJ1

8 0
1 year ago
A solution (HELP ASSAAAAP ROAD TO GRADUATION)
creativ13 [48]

Hey there! A simple explanation is below.

Answer:

D) is a single phase homogeneous mixture.

Explanation:

A solution is a form of homogenous combination made up of two or more components in chemistry. A solute is a material that is dissolved in another material, known as a solvent, in such a combination. The mixing of a solution takes place at a scale where the effects of chemical polarity are present, resulting in solvation-specific interactions. In most cases, the solution is in the condition of the solvent, because it is most common in the mixture.

3 0
2 years ago
Write down three use of chlorine​
melomori [17]

Answer:

Chlorine is commonly used as an antiseptic and is used to make drinking water safe and to treat swimming pools. Large amounts of chlorine are used in many industrial processes, such as in the production of paper products, plastics, dyes, textiles, medicines, antiseptics, insecticides, solvents and paints.

Explanation:

hope this helped you

please mark as the brainliest (ㆁωㆁ)

4 0
3 years ago
Read 2 more answers
Other questions:
  • Electrons is an excited state are more likely to enter into chemical reactions.
    12·1 answer
  • Describe the three temperature scales used in the laboratory and in everyday life: the Fahrenheit, Celsius, and Kelvin scales.
    13·1 answer
  • what is an ordered arrangement of particles extends over a long distance in a solid, the material is called?
    11·2 answers
  • Which element (A, B, or C) is most likely a metalloid
    5·2 answers
  • Isotopes have
    14·1 answer
  • How many molecules are in 4.5 moles of CO2?
    12·1 answer
  • What is the unit of measure for energy? watt newtons joules meters per second
    13·2 answers
  • An industrial chemist introduces 8.1 atm h2 and 8.1 atm co2 into a 1.00-l container at 25.0°c and then raises the temperature to
    12·1 answer
  • Select two that are true
    7·1 answer
  • A chemistry student wants to learn how pressure and volume affect one another. They gather a sample of helium from a ballon and
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!