1 point A student team heated two solid substances, A and B, and collected data
about their temperatures over time. Using their data, the students made a
graph, numbering that segments that represented a phase or a phase
change for each substance. Their graph is shown below. Which substance
has a lower specific heat capacity while it is a solid, and how does the
graph indicate this?
Heating of Two Substances
Substance A
Substances
Time
O Substance A because segment 1 is steeper than it is in substance B
O Substance B because segment 3 is steeper than it is in substance A
O Substance A because segment 2 begins earlier than it begins in substance B
O Substance because segment 4 occurs at a lower temperature than in substance A

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.

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.  

the answer is c

tell me if wrong