<u>Answer:</u>
1.1328 g left after 15.6 years
<u>Explanation:</u>
First we need to find, that how many times it decays: 15.6 ÷ 2.60 = 6 times
Then we know the formula: mass of original ÷ 2^n = remaining mass.
: 72.5 ÷ 2^6 = 1.1328 g left.
- Note here n is the number of time, it decays.
Turmeric solution turns red in contact with bases and is not affected by acids and neutral substances. Put one drop of each liquid as the turmeric paper. The liquid whose drop turns the paper red is solution hydroxide (base).
Answer:
4.21778 J/(g*C)
Explanation:
specific heat = joules / (mass times temperature change)
949 / (9 times 25)
949 / 225 =
4.21778
This type of mixture is a heterogeneous mixture. It is any mixture that is not uniform. Heterogeneous mixtures always have more than one phase.It is made up of substances which stays physically separate with each other. Best example is a mixture of sand and sugar. If you get two samples from different points of the mixture and analyze it, you will see that the concentrations of the components are different and that the two solid phases never combine with each other.
Answer: potential.
Chemical energy is the energy provided by a chemical reaction.
Kinetic energy is the energy due to the speed.
Potential energy is the energy due to the position. For example, an object on the top of a mountain, has the possibility to perform work if it falls.
Electromagnetic energy. is propagated by waves: radio waves, infrared radiation, microwaves, etc.