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
Liula [17]
3 years ago
13

How could you separate a mixture of rocks and sand

Chemistry
1 answer:
Assoli18 [71]3 years ago
7 0
Sedimentation and decantation




You might be interested in
Do you know the three core principles of cell theory?
sammy [17]

All living organisms are composed of one or more cells. The cell is the basic unit of structure and organization in organisms. Cells arise from pre-existing cells.

8 0
3 years ago
Read 2 more answers
Which statement best describes mechanical energy?
pav-90 [236]

Answer:

The energy of moving parts and motion

Explanation:

Mechanical energy doesn't have change in temperature or heat, so electricity and heat would be cancelled out. Mechanical energy is more about motion.

3 0
2 years ago
for the reaction C+2H2= Ch4 how many molecules of hydrogen are required to produce 14 grams of methane Ch4?
Nina [5.8K]

Answer:

mass of CH4 = 14

Molecular mass of CH4 16.04gmol

No of mole of CH4 = 14/16.04

No of mole of CH4 = 0.8728mol

Stoichiometrically, from the above

2 Molecules of Hydrogen will produce 1molecule of methane

Therefore, 2*0.8728 mole of Hydrogen will produce 0.8728mol of Methane.

The no of molecule of hydrogen is 1.7456

5 0
3 years ago
The figure above shows the electric field around a positive charge. Where is the field strongest
WINSTONCH [101]
The electric field, or any field such as magnetic field or gravitational field, is the strongest the closer we get to the source of the field. The concentration of field lines also increases closer to the object; these field lines are seen to be coming out of a positive charge. 
Therefore, the strongest electric field is at the point where the concentration of electric field lines is the highest.
4 0
3 years ago
How many calories is 130. joules?
skad [1K]
1 Cal ---------- 4.184 J
? Cal ---------- 130.0 J

130.0 x 1 / 4.184 => 31.07 Cal

hope this helps!


6 0
3 years ago
Other questions:
  • An acorn falls from a tree and accelerates at 9.8 m/s2. It hits the ground in 0.67 s. What is the speed of the acorn when it hit
    11·1 answer
  • How many moles of Li3N will be created using 0.24 moles of Li in the given reaction? 6Li + N2 2Li3N 0.04 moles 0.08 moles 0.12 m
    10·1 answer
  • Find concentration of each ions:<br> 600.0 ml of solution containing 1.50 grams of Cr(NO3)2
    6·1 answer
  • A sample of O2, under occupies 500ml at 25.0°C. What volume will the sample occupy at 0.0°C
    13·1 answer
  • Which of the following is a compound? A. Sn B. CO C. H D. Mg
    9·1 answer
  • Which must be the same when comparing 1 mol of oxygen gas, O2, with 1 mol of carbon monoxide gas, CO? the mass the volume the nu
    15·2 answers
  • Report with correct significant figures in scientific notation <br>3.698 X 10^4÷1.85 X 10^2​
    10·1 answer
  • 21.4 L of gas at 42.3 °C and 681 mm Hg are heated to 221 °C, and the pressure is changed to 248 mm Hg. What is the new volume?
    7·1 answer
  • Find the element, mass number, atomic number, and number of protons from the following information.
    5·1 answer
  • The above map shows the route of a car traveling from home to the parkIf the car is traveling at a constant speed, does the car
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!