Given the following reaction: zn(s) + 2 hbr (aq)→ znbr2 (aq) + h2 (g)when 0.7240 grams of zinc are mixed with 75.00 ml of 0.8000 m hbr (aq) in a styrofoam cup, the temperature of the solution increases from 19.81°c to 25.08°c. calculate ∆h and ∆e for the reaction as written.

i know insulin is primary but i dont know the others im sorry

explanation:

answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.

explanation:

i think so it’s will be b yes i believe its

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.