Answer:
1:is option A as it have OH- group (base)
2:a),antacid as it's weak base
I would say B... ultraviolet rays cause sun burns
Q=44.0 ct
p=3.51 g/cm³
Δq=0.200 g/ct
m=q×Δq
v=m/p=q×Δq/p
v=44.0×0.200/3.51≈2.5 cm³
C. 2.5 cm³
Answer:

Explanation:
1. Balanced chemical equation.

2. Moles of NaOH

3. Moles of HBr
The molar ratio is 1 mmol HBr:1 mmol NaOH

4. Volume of HBr

Answer:
Astronomers measure distance in space or the distance light travels in one Earth year.
" A light-year is how astronomers measure distance in space. It's defined by how far a beam of light travels in one year – a distance of six trillion miles."