Answer: A salt
Explanation:
The reaction of Acids with most metals and, when they do, a salt is produced without water. Unlike the reaction between acids and bases, we do not get water.
Answer:
mass of block=2.7 gm
Explanation:
concept: Density=mass/volume
given:ρ=2700 kg/m^3 and v=250 cm^3 (in cm^3 not in m^3)
=> v= convert cm^3 to m^3
there fore= 1 cm^3=1 cm*1 cm*1 cm
i.e 1 cm^3=1/100*1/00*1/100 m^3 => 1 cm^3=1/1000000 m^3
ρ=m/v
=>mass=ρ*volume
=>mass=2700*1/10^-6
=>mass=2.7*10^-3 kg =>2.7 gm
Answer:
A
Explanation:
they are atoms of the same element that have the same number of protons but different number of neutrons.
A heliocentric system is a sun-centered
