The density is the ratio of the substance's mass to its volume. Density is an extensive property even though mass and volume are both intensive properties. It is because density is constant for each substance at a specified temperature and pressure. The equation is
Density = mass/volume
Substituting the values,
1.40 g/cm³ = [500 mg * (1 g/1000 mg)](Volume)
Volume = 0.357 cm³
Radium-221 has a half-life of 30 s. how long will it take for 95% of a sample to decay
this would be 2.22 seconds
Answer:
If a substance can be separated into its elements, it is a compound. If a substance is not chemically pure, it is either a heterogeneous mixture or a homogeneous mixture. If its composition is uniform throughout, it is a homogeneous mixture.
Explanation:
I hope it may help u
Answer:
FALSE
Explanation:
Keratinocytes begin to die in the stratum granulosum is False.