Answer:
C.
two in the reactants and two in the products
Explanation:
The law of conservation of mass helps us balance chemical equations so that there are the same number and type of atoms in the reactants and products.
There are two nitrate ions in Ba(NO3)2 and two in 2LiNO3.
Answer:
Most interactions among atoms take place in the outermost shell of each atom. The number of each electron in this shell determines how an atom combines with other atoms to form compounds. When atoms combine they gain, lose or share electrons in such a way that the outer shells become chemically complete.
Explanation:
Without the atmosphere, the greenhouse effect would not be possible.
<span>Factors that influence the reaction rates of chemical reactions include the concentration of reactants, temperature, the physical state of reactants and their dispersion, the solvent, and the presence of a catalyst.</span>
Answer:
- <em>There are </em><u>0.106 mol</u><em> of glucose.</em>
Explanation:
<u>1) Data:</u>
a) Chemical formula: C₆H₁₂O₆
b) Molecular weight, MM = 180.16 g/mol
c) mass, m = 19.1 g
c) n = ?
<u>2) Formula:</u>
<u>3) Soltuion:</u>
Substitute the data:
- n = 19.1 g / 180.16 g/mol = 0.106 mol
The<em> significant figures</em> start with the first non-zero digit after the decimal point, so they are 1, 0, and 6, i.e. three significant figures.
