Answer:
1.1 mol
Explanation:
n=m/M, where n is moles, m is mass, and M is molar mass.
M of CO2 = 12.01+16.00+16.00 = 44.01g/mol
n=50g/44.01g/mol
n = 1.13610543 mol
n ≈ 1.1 mol
Hope that helps
Answer:
2NO + 4H-> N2 + 2 H2O
Explanation:
Both sides must be equal. :)
Answer:
(a) ⁴¹₁₉K
(b) ¹⁰⁶₄₆Pd
(c) ¹²⁵₅₂Te
(d) ⁸⁸₃₈Sr
Explanation:
The identity of an element is its atomic number, by convention we write the atomic mass as superscript and the and the atomic number as subscript to the left of the element .
(a) Z = 19 A = 41 symbol: ⁴¹₁₉K
(b) Z = 46 A = 106 symbol: ¹⁰⁶₄₆Pd
(c) Z = 52 A = 125 symbol: ¹²⁵₅₂Te
(d) Z = 38 A = 88 symbol: ⁸⁸₃₈Sr
Answer:
For things that we can not directly observe, we can use indirect observation – which studies the consequences of an action or process. For example, we cannot see the Earth's magnetic field, but we detect it by its effect on a compass.
The physical properties used by scientists to describe all matter, sight, smell, taste, color, texture, mass, weight, volume, and density.