You have this in Chemistry. It should be in physics, but never mind that.
A
d = 4 km due east. See note for part B.
t = 45 minutes = 3/4 hour
v = ??
d = v * t
4 = v * (3/4)
v = 4/(3/4) = 4 * 4/3 = 16/3 = 5 1/3
So his rate of travel is 5 1/3 km/hr due east. If you do not give the direction when it says velocity, you are wrong. Velocity has direction.
B
10 45 to 11 45 is 1 hour.
d = v * t
d = 6 km due south (this is actually a displacement which also has direction).
t = 1 hour
6 = v * (1)
6/(1) = v
6/(1) = v
v = 1 km/ hr due south
Answer:
3.5 mL
Explanation:
Let us represent lauric acid with the symbol LaCOOH and the anion as LaCOO-. The reaction between the anion and H2SO4 is;
LaCOO-(aq) + H2SO4(aq) -----> LaCOOH(aq) + HSO4-(aq)
Number of moles of LaCOO- = 2.75 g/200 g/mol = 0.014 moles
Since the mole ratio of the reaction is 1:1, then the amount of H2SO4 required is also 0.014 moles
Then;
n = CV
n = number of moles
C= concentration
V = volume
V = n/C
V = 0.014 moles/4.0 M
V= 3.5 * 10^-3 L
V = 3.5 mL
there are 8 planets in our solar system 1.Mercury 2.venus 3.earth 4.mars 5.jupiter 6.saturn 7.uranus 8. neptune
"<span>4 Na + O2 2 Na2O" is the one chemical equation among the following choices given in the question that </span><span>is correctly balanced. The correct option among all the options that are given in the question is the fourth option or option "4". I hope that this is the answer that has actually come to your great help.</span>