Answer:
me i need free points because i need help on my math work
Si -Atomic number -14 -1s2 2s2 2p6 3s2 3p2 - 4 valence electrons
Answer:
The half-life varies depending on the isotope.
Half-lives range from fractions of a second to billions of years.
The half-life of a particular isotope is constant.
Answer:
F = 0.0725 N
Explanation:
Given that,
The mass of peach, m = 7.4 g
We need to find the force acts on the peach when it falls from a tree. The force is given by :
F = mg
So,
So, the force is 0.0725 N.
if the product has lesser energy than the reactants it means enthalpy change value is positive.so it is endothermic reaction where the heat is absorbed.so kcl will formation will have positive enthalpy change .
