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Find the number of SiO2

Put the following in order in terms of increasing melting point: SiH4, SiO2, CH4, NH3, PH3.Lowest → Highest (A) NH3, PH3, CH4,
1. 2 answers
2. asked by LeePyeong
3. 1,967 views
How many oxygen atoms are in 1.90g og quartz (SiO2)?ok so 1.90g SiO2(1mol/60.0843g SiO2)(2 O mols/1 mol SiO2)
1. 1 answer
2. asked by Natash
3. 2,318 views
check answer please10. 2 Ca3(PO4)2(s) + 6 SiO2(g) + 10 C(s) ---> P4(s) + 6 CaSiO3(s) + 10 CO(g) If 39.3 g of Ca3(PO4)2, 24.4 g
1. 2 answers
2. asked by Shine bright shine far
3. 2,554 views
Find the number of SiO2 formula units in m = 1.90g of quartz.
1. 2 answers
2. asked by LIO
3. 3,429 views
A Portland cement sample contained 20% SiO2 by weight derived from two silicate compounds. SiO2.2 CaO and SiO2. 3CaO that are
1. 1 answer
2. asked by Man Singh Chouhan
3. 891 views
1. Silicon dioxide reacts with carbon upon heating to produce silicon carbide (SiC) and carbon monoxide.SiO2(s) + 3C(s) = SiC(s)
1. 2 answers
2. asked by Luke
3. 2,172 views
Reacting 959 mol of SiO2 with excess carbon yields 28.8 kg of SiC. What is the percentage yield?SiO2 + 3C--> SiC + 2 CO
1. 1 answer
2. asked by Kelly
3. 586 views
How to determine SiO2/Na2O ratio after mixing Na2SiO3 (SiO2=35%, Na2CO3=15%, water=50%) solutions?
1. 1 answer
2. asked by Tony
3. 461 views
If a reaction was started with 3 mL of TEOS in H2O and yielded 0.3275 grams of SiO2. what is the percent recovery of SiO2?
1. 2 answers
2. asked by Guy
3. 557 views
For the following reaction, what mass of SIC is made from120.2g of SIO2 and 120g of C?SiO2(s) + 3C(s) ---SiC(s) +2CO(g)
1. 2 answers
2. asked by jennifer
3. 646 views