Answer:
Molecules in the pie move faster than molecules in the skin, so heat is transferred to the skin.
Explanation:
B
(2) calcium sulfate (4) sodium perchlorate
Answer: 4 sodium perchlorate
Explanation:
Answer :
The parent and daughter concentrations (in percentages) is, 60 % and 40 % respectively.
The age of rock is
Explanation :
First we have to calculate the parent and daughter concentrations (in percentages).
and,
As we know that, the half-life of uranium-238 = years
Now we have to calculate the rate constant, we use the formula :
Now we have to calculate the time passed.
Expression for rate law for first order kinetics is given by:
where,
k = rate constant =
t = time passed by the sample = ?
a = initial amount of the reactant = 3 g
a - x = amount left after decay process = 1.8 g
Now put all the given values in above equation, we get
Therefore, the age of rock is
>Conservation is, preservation, protection, or restoration of the natural environment, natural ecosystems, vegetation, and wildlife
>Two examples are;
* turn off the water from the bathroom thing the sink while brushing your teeth or something
* If you don't drink all your water from the water bottle use it to water a plant or something ✌
Answer:
Conservation is using a resource wisely so it will not be used up. Possible examples include: take shorter showers; fill the bathtub only halfway; do not run water while scrubbing vegetables or brushing teeth; water lawns early in the morning or late in the afternoon; and run the washing machine only for a full load.
Explanation:
and what is it main function?