B. 0.9 <span>
</span>D.Light intensity has no effect on whether electrons are emitted or not.
and
A. X=1.9eV,Y=0.2eV
I already took the gizmo so I know these are right. The first one I got wrong b/c there was no graph and the last one I didn't understand. Basically for the last one you calculate the work function for the metals and find their difference.
Hope this helps.
The greatest amount of energy released per gram of reactants occurs during a (1) redox reaction, although it should be noted that there are exceptions depending on environment.
Answer:
Explanation:
q= mc theta
where,
Q = heat gained
m = mass of the substance = 670g
c = heat capacity of water= 4.1 J/g°C
theta =Change in temperature=(
66-25.7)
Now put all the given values in the above formula, we get the amount of heat needed.
q= mctheta
q=670*4.1*(66-25.7)
=670*4.1*40.3
=110704.1
Its total charge is zero but for the elements:
Sn===> Sn4+ positive
Cl===> Cl- negative
Answer:
a) quantitative
b) qualitative
c) quantitative
d) qualitative
e) quantitative
Explanation:
a) it is a quantitative statement, since it uses the concepts of limits and aproxximation in the calculation to give its estimate.
b) it's a qualitative statement, beacause its an appreciation of someone who thinks that one's work ist better than another's.
c) it is a quantitative statement, since it is an expression that is mathematically demonstrated,
d) it's a qualitative, beacuse it'a a simple opinion of someone.
e) it is a quantitative statement, since this expression is demonstrated in real life and helps to save
