Answer:
heat?
Explanation:
the sun warms the popsicle, therefore melting th popsicle.
sry if this is wrong
475/500 * 100 =95% you take what you have then divide by the total
then times 100
The same number of molecules will be if there are the same number of moles.
So, we need to find numbers of moles for these substances?
M(CH4) = 12+4=16 g/mol
2.0g*1mol/16g =1/8 mol
M(O2) = 2*16 = 32 g/mol
8.0g*1mol/32g = 1/4 mol
M(O3) = 3*16 = 48 g/mol
2.0g*1mol/48g =1/24 mol
M(SO2) = 32+2*16 = 32+32=64 g/mol
8g*1mol/64g = 1/8 mol
2.0 g CH4 and 8.0 g SO2 have the same numbers of mole, so they have the same numbers of molecules.
<h3>
Answer:</h3>
Direction
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Explanation:</h3>
The question is testing on vector and scalar quantities.
What are vector quantities and scalar quantities?
- Quantities with both magnitude and direction are known as vector quantities while those with only magnitude are known as scalar quantities.
What are the examples of vector and scalar Quantities?
- Vector quantities examples- Velocity, force, displacement, etc
- Scalar quantities examples - Speed, distance, temperature, mass, etc
What would be the difference of speed and velocity then?
- Speed and velocity differ in that velocity has both magnitude and direction (vector quantity) while speed has magnitude only (scalar quantity).
Further Explanation;
- Velocity refers to the rate of change in displacement of a body in motion
- It is given by, Velocity = Displacement ÷ time
- Speed on the other hand is the rate of change in distance of body.
- It is calculated by, Speed = Distance ÷ time
- Displacement is the distance in a specified direction.
- Velocity and displacement are vector quantity in that they have both magnitude and direction.
- Speed and distance on the other hand lack direction and thus are scalar quantity since they only have magnitude.
Explanation:
235 U92 + 1n0 --> A + B + 3 1n0
when A = ;
(a) xenon-133
Mass number of B = 235 + 1 - 133 -3 = 100
Atomic number = 92 - 54 = 38
Element = Sr - Strontium
(b) barium-144
Mass number of B = 235 + 1 - 144 -3 = 89
Atomic number = 92 - 56 = 36
Element = Kr - Krypton
(c) cesium-143
Mass number of B = 235 + 1 - 143 -3 = 90
Atomic number = 92 - 55 = 37
Element = Rb - Rubidium
(d) tellurium-137
Mass number of B = 235 + 1 - 137 -3 = 96
Atomic number = 92 - 52 = 40
Element = Zr - Zirconium
(e) lanthanum-146
Mass number of B = 235 + 1 - 146 -3 = 87
Atomic number = 92 - 57 = 35
Element = Br - Bromine