Asked in Chemistry
How many moles of iron atoms are there in 56g of iron?
How do you convert from moles to gram?
It depends on the RMM (relative molecular mass) of the molecule your dealing with. For example if you had 2 Moles of ethene (C2H4) then you would simply multiply the number of moles by the RMM, which for ethene is approximately 28 [2C=24 +4H=28] So just multiply the RMM (28) by the number of moles(2) which gives 56g so 2 Moles of C2H4 weighs 56g.
Asked in Chemistry, Metal and Alloys
How many grams of calcium carbonate are required to prepare 50.0 g of calcium oxide?
This is a mass stoichiometry problem. Start with the balanced equation: CaCO3 --> CaO + CO2. Do a conversion from 50g CaO to moles: 56g/1mol=50g/x, x=.9 moles. The equation is balanced as written, with all coefficients understood to be 1. So: .9 moles CaO means .9 moles CaCO3. Do another conversion from moles to grams: 100g/1mol=x/.9 moles. Solve for x to get 90 grams. (56g=molar mass of calcium oxide; 100g=molar mass of calcium carbonate.)
Asked in Metal and Alloys
Which will have a greater volume 1 kilogram of copper or 1 kilogram of iron?
Asked in Elements and Compounds
What is the volume of 56g of nitrogen gas at 750mmHg and 25c?
Asked in Chemistry, Elements and Compounds
What is the percent yield for iron if the reaction of 65.0 g of iron oxide produces 33.0 g of iron?
Well, I ran the numbers for what you have in the question, and it didn't make sense, so I'm assuming you really mean 65g of iron yields 33g iron oxide. I'm also assuming you mean iron(III) oxide, which is iron's most common valence state when it reacts with oxygen, which means the product's formula would be Fe2O3. With those things in mind, here's your balanced equation: 4Fe + 3O2 --> 2Fe2O3. Step1: given 65g Fe, how many moles is that? Direct proportion between 65g and the unknown # of moles and iron's atomic mass of 56g/mol gives us 1.16 moles of iron. Step 2: molar ratio of iron to iron(III) oxide is 4-2, which simplifies to 2-1, so you will have 0.58 moles of product. Step 3: given 0.58 moles of product, set up another direct proportion with the unknown mass over given moles equal to iron(III) oxide's molar mass of 160g/mol to get a mass of 92.8g theoretical yield of product. Step 4: your actual yield was 33g, so divide that by the stoichiometric yield of 92.8g, which is 0.355, which means about a 36% actual yield, which is the answer.
Asked in Chemistry, Weight and Mass
How many grams of KOH react with 1 mole of MgCl2?
Asked in Health, Nutrition, Calorie Count
How many calories are in Black Forest ham?
Calories in Black Forest Ham Here are various examples. It varies according to quality, brand/manufacturer and whether the Black Forest ham is presented as a traditional Black Forest ham or a deli-style Black Forest Ham. A regular size slice is about 2 ounces or 56g (a wafer-thin slice would be less). There are: 50 calories in 2oz or 56g of Apple Gate Farm Black Forest ham 52 calories in 2oz or 56g of Farmer John's Black Forest Ham 60 calories in 2oz or 56g of Boar's Head smoked Black Forest ham 60 calories in 2oz or 56g of Safeway Black Forest ham 70 calories in 2oz or 56g of Wegmans Black Forest Ham 110 calories in 2oz or 56g of President's Choice traditional Black Forest ham 110 calories in 2oz or 56g Farmer John's boneless, traditional premium, Black Forest half. For the calories in vegetables, salad, or fruit, to serve with Black Forest ham, and vegetable/salad and fruit calorie charts that you should use as daily guides for either weight loss or weight maintenance, see the page link, further down this page, listed under Related Questions.