Answer:
A
Explanation:
they usually have that Crystal like thing in them... since they are formed from Lava
Answer is: there are 3.011·10²³ atoms of calcium.
n(Ca) = 0.50 mol; amount of substance(calcium).
Na = 6.022·10²³ 1/mol; Avogadro's constant or number.
N(Ca) = n(Ca) · Na.
N(Ca) = 0.50 mol · 6.022·10²³ 1/mol.
N(Ca) = 3.011·10²³; number of calcium atoms.
The mole is an SI unit which measures the number of particles in substance. One mole is equal to <span><span>6.022</span></span>·<span><span><span>10</span></span></span>²³<span> atoms.</span>
Answer:
A base.
Explanation:
Basic solutions give OH- ions.
Answer:
B) the full spectrum of light
Explanation:
MgO
MgI2
PbO2
PbI4
These are the possible compounds
