N2 + 3H2 ---> 2NH3
mass of N2 = 28g
mass of H2 = 2g
mass of NH3 = 17g
according to the reaction:
28g N2----------------- 3*2g H2
85,5g N2-------------------- x
x = 18,32g H2 >>> so, nitrogen is excess
according to the reaction:
2*3g H2---------------------- 2*17g NH3
17,3g H2 ------------------------- x
x = 98,03g NH3
<u>answer: 98,03g of NH3</u>
We are given the balanced equation 2NaF + Ca10(PO4)6(OH)2 → Ca10(PO4)6F2 + 2NaOH. The fluorapatite is the product together with sodium hydroxide. The ions involved are (PO4) 3-, Ca 2+ and <span>F-. We add the charges and check if the sum is zero, 2*10+-3*6+-1*2 =0. the zero sum tells that the compound has zero charge or neutral</span>
Answer:
Mass = 235 g
Explanation:
Given data:
Mass of SiO₂ react = 352 g
Mass of silicon carbide formed = ?
Solution:
Chemical equation:
SiO₂ + 3C → SiC + 2CO
Number of moles of SiO₂:
Number of moles = mass/ molar mass
Number of moles = 352 g/ 60.08 g/mol
Number of moles = 5.86 mol
Now we will compare the moles of SiO₂ with SiC from balance chemical equation.
SiO₂ : SiC
1 : 1
5.86 : 5.86
Mass of SiC:
Mass = number of moles × molar mass
Mass = 5.86 mol × 40.11 g
Mass = 235 g
When two clear substance combines, an insoluble solid is formed that settle downs as a ________.
When two clear substance combines, an insoluble solid is formed that settle downs as a <u>precipitate</u><u>.</u>
<em>→</em><em>A </em><em>precipitate</em><em> </em><em>is </em><em>a </em><em>substance</em><em> </em><em>to </em><em>be </em><em>deposited</em><em> </em><em>in </em><em>solid</em><em> </em><em>form </em><em>from </em><em>a </em><em>solution</em><em>.</em>
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<span>To compare the energy of microwaves, IR-B, and IR-A, we need to compare how long the wavelengths are for each wave. Through the intervals given, we can determine that we in order from greatest to least energy, the order is IR-A, IR-B, microwaves.</span>
