Which of these subatomic particles has virtually no mass?
a
Proton
b Nucleus
C Neutron
d Electron
Chockit
int?
B. The electrons in the atom orbit around the protons.
C. The electrons are embedded in a positive sphere.
Prince Henry
da Gama
Dias
Cabot
prince Henry is your answer (:
Answer:
prince Henry
Explanation:
Answer:
Second graph is more reactive.
Explanation:
I just did the lesson myself, chose the first graph, and obviously got it wrong.
Therefore I can tell you with 100% certainty that the correct answer is graph #2 in this case. Hope this helps.
b. A scientific law describes what occurs every time in a situation.
c. A scientific law is constantly modified.
d. A scientific law is developed without experimentation.
The correct answer is B.
scientific law which describes what occurs every time in a situation. Scientific law always applies under same condition.
Laws differs from scientific theory because they does not posit explanation of phenomena.
Different laws takes mathematical forms. Scientific law is being associated with natural science but social sciences also contains laws.
A good example of scientific law in social sciences is Zipf's law.
Answer:
B. a law is a proven fact that cannot be changed.
Explanation:
Answer : The mass of magnesium oxide produced will be, 161.2 g
Solution : Given,
Mass of Mg = 97.2 g
Mass of = 88.5 g
Molar mass of Mg = 24.3 g/mole
Molar mass of = 32 g/mole
Molar mass of MgO = 40.3 g/mole
First we have to calculate the moles of Mg and .
The balanced reaction is,
As, 2 moles of Mg react with 1 moles of
So, 4 moles of Mg react with moles of
From this we conclude that the is in excess amount and Mg is in limited amount.
Now from the reaction we conclude that
As, 2 moles of Mg react to give 2 moles of MgO
So, 4 moles of Mg react to give 4 moles of MgO
Now we have to calculate the mass of MgO.
Therefore, the mass of magnesium oxide produced will be, 161.2 g