In a chemical change, the atoms in the reactants rearrange themselves and bond together differently to form one or more new products with different characteristics than the reactants. When a new substance is formed, the change is called a chemical change.
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Answer:
It needs an force in the opposite direction.
Explanation:
Example:
The box is on a flat surface. You use your hands to push it. You have to push it in the opposite direction.
Because if an electron was in an atom, it would allow two atoms to combine without exploding and disentigrating, therfore there would be no suck thing as nuclear fission (nuclear bomb)
Answer:
a) Gold: 5, 2, 2, -1/2
b) Magnesium
: 3, 0, 0, -1/2
c) Iodine: 5, 1, 0, -1/2
d) Cadmium: 4, 2, 2, -1/2
Explanation:
To understand Chemistry in its true sense, it is necessary to know the way the electrons are arranged within the atom and also understand the how and why of the bond and reactivity. To do this, you must first know the how and why of the electronic structure. , this can be done with quantum numbers.
The quantum numbers are four and they help us to describe the place of the electrons in the vicinity of the nucleus.
Answer:
Explanation:
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In this case, according to the given information derived from the combustion analysis, it turns out possible for us to realize that all the carbon comes from the CO2 and all the hydrogen from the H2O, it means we can calculate their moles in the vitamin C as shown below:
Next, we calculate the grams and moles of oxygen from the grams of C and H in the sample:
Then, we divide the moles of C, H, O by 0.0165 as the fewest moles in order to calculate the correct mole ratios:
Finally, we turn them into whole number by multiplying by 3 so that the empirical formula is:
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