Answer:
0.185moles
Explanation:
1mole of bicarbonate produces 1mole of CO2
so 0.185 mole produces 0.185 moles of CO2
Answer:
Na₂SO₄•(H₂O)₆.
Explanation:
<em>The mass that is lost when the sample is heated is water.</em>
Let's assume we have 100 g of the hydrate:
43 grams would be water (H₂O), while the rest (100-43=57) would be sodium sulfate anhydrous (Na₂SO₄).
We <u>convert both those masses to moles</u>, using their <em>respective molar masses</em>:
- H₂O ⇒ 43 g ÷ 18 g/mol = 2.39 mol
- Na₂SO₄ ⇒ 57 g ÷ 142.04 g/mol = 0.40 mol
We can write those results as (Na₂SO₄)₀.₄₀•(H₂O)₂.₃₉. Now we just need<u> to multiply those numbers so that they become integers.</u>
If we multiply both coefficients by 5 we're left with (Na₂SO₄)₂•(H₂O)₁₂.
<u>Simplify </u>and thus the final answer is Na₂SO₄•(H₂O)₆.
Answer:
d=2760,9m
Explanation:
<em>The gravitational force between two equal masses is defined as </em>
<em>F=G.m^2/d^2 where m is mass, G is the universal gravitation ( approximately= 6,67x10^-11N.m^2/kg^2) constant , F is the attractive (or repulsive) force and d is the distance between the masses. </em>
<em>Substitude the values of the quantities into the equation </em>
<em>d^2= G.m^2/F</em>
<em>d= 2760,9m</em>
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Answer:
im sorry but what is it post to be
Explanation: