Hydrogen Silicon Oxide
N2O, NO and NO2 illustrates what law? What about these other chem questions?
Is it the law of constant composition, multiple proportions or conservation of mass?
what mass of water will fill a container measuring 10cm by 10 cm by 10cm. I did this one the long way, I want to know the shortest way possible.
Nitrous oxide can be decomposed to give 7.0parts bt mass of nitrogen and 4.0parts bt mass of oxygen. What mass of Nitro is obtained if enough nitrous oxide is decomposed to give 36g of oxygen? For this one, I am confused, should I use O or O2 when writing down my grams?
the gas silane can ve decomposed to give silicon and Hydrogen in a ratio of 7 parts by mass of silicon to one part by mass of Hydrogen. The mass of a single silicon atom is 28 units while the mass of a single hydroen atom is one unit. How many Hydrogen atoms are combined with each silicon atom?
10g of lead combine with 1.56g of sulfur to form 11.56g of lead sulfide. If 18g of lead is mixed with 1.56g of sulfur, _____ of lead sulfide will be produced with _______ left over.
you are comparing different compounds so it is multiple proportions.
10 cm x 10 cm x 10 cm = 1,000 cm3
1000 cm3 x 1 g water/1 cm3 water = 1000 g water. That is the only way I know to do this problem
Mass nitrogen: mass oxygen is in the ratio 7.0:4.0
So if you scale up to get 36 g oxygen, you will get
7.0 x 36/4.0 g nitrogen.
It doesn’t matter whether you think of the 4.0 g oxygen as 1/4 mole O atoms or 1/18 mole O2 molecules.
Mass ratio Si:H 7:1. But to get a complete mole Si, you need to scale up to 28 g Si. How many g H will that give you? What is the molar mass of H? So how many moles H well that give you.
Last problem: you are told that1.56g S is enough to react completely with 10 g lead; so if you started with 18 g lead, you will have (18 – 10) g left over. If you have followed my reasoning, it will be obvious how much lead sulphide has been made.
Zinc Oxide Your Alien Skin is Self Powering Nanosystem
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Hydrofluoric Acid: Solution, Hydrogen fluoride, Water, Fluorine, Fluoxetine, Polytetrafluoroethylene, Glass, Silicon tetrafluoride, Hexafluorosilicic acid, … Wilhelm Scheele, Polyethylene, Metal, Oxide $53.16 High Quality Content by WIKIPEDIA articles! Hydrofluoric acid (HF) is a solution of hydrogen fluoride in water. While it is extremely corrosive and difficult to handle, it is technically a weak acid. Hydrogen fluoride, often in the aqueous form as hydrofluoric acid, is a valued source of fluorine, being the precursor to numerous pharmaceuticals such as fluoxetine (Prozac), diverse polymers such as… |