Answer:
a.The waves are absorbed or reflected to capture images
Explanation:
How Things Work: TSA scanners use electromagnetic waves for detection. ... These waves are bounced off the body of the person being scanned to create a three-dimensional image on the computer. The backscatter units instead bounce low-level electromagnetic X-rays off the body to create an image on the computer
Answer:
synthesis
Explanation:
I believe answer is d a synthesis reaction
Plants combine water and Carbon dioxide from the air to make glucose for themselves, and giving off oxygen in the process. So CO2 and H2O would be on ther reactant side (left) with O2 and C6H12O6 being on the product side (right).
Answer:
a) KI and Na₃PO₄
b) HF
c) CaBr₂
Explanation:
The depression in freezing point, relative lowering of vapor pressure and elevation in boiling point are colligative properties.
The collegative properties depend upon the number of solute particles.
Let us see the concentration of particles in each of the given solutions:
a) 0.010 m Na₃PO₄ in water : each molecule will give three sodium ions and one phosphate ion.
So the concentration of particles in the solution = 4 X 0.01 = 0.04 m
b) 0.020 m CaBr₂ in water : each molecule will give one calcium ion and two bromide ion thus the concentration of particles in the solution
= 3 X 0.02 = 0.06 m
c) 0.020 m KCl in water: each molecule gives two ions thus the concentration of solution = 2 X 0.02 = 0.04 m
d) 0.020 m HF (weak acid) in water: the acid is weak, so each molecule will not give two ions completely (complete dissociation will not be observed). concentration of solution will be more than 0.02 but less than 0.04.
a) Both KCl and Na₃PO₄ will have same boiling point as 0.04 C₆H₁₂O₆.
b) the solution with least concentration of solute will have highest pressure. Thus HF is the answer,
c) the largest depression will be in the solution with highest solute concentration: Answer: CaBr₂.
