Four balls with different masses. 4018
20kg
10
ske
Kinetic energy is energy of motion. The kinetic energy of an object is dependent on two variables, speed and mass and can be represented by the formula
KE - 1/2mv?
1) Four balls were rolled at a set of wooden pins. The balls were rolled with different amounts of force so that they traveled at approximately the same speed. Will there be a difference in the amount of
pins knocked down? Explain

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

d) nh3 give me brainliest