The model of the atom has dramatically changed over many many years.We learned atoms make up different substances and are the smallest particles of matter, which have subatomic particles that are very small portions of matter. At first scientist only thought there were electrons which are negatively charged.
The correct response is A. Non-disjunction of sex chromosomes.
C) Weathering can be chemical or physical; deposition
is only chemical
Answer:
1.62 × 10⁴ cal
Explanation:
Step 1: Given and required data
- Mass of water (m): 30.0 g
- Latent heat of vaporization of water (ΔH°vap): 540 cal/g
Step 2: Calculate the heat change (Q) for vaporization of 30.0g of water at 100 °C
The vaporization is a phase change in which water passes from the liquid state to the gaseous state. We can calculate the heat required using the following expression.
Q = ΔH°vap × m
Q = 540 cal/g × 30.0 g
Q = 1.62 × 10⁴ cal
Answer:
Explanation:
First of all the chemical formula 
The chemical is named Lead(IV)Phosphate.
