This is a chemistry question:
Grandma wanted to make a big batch of lemonade for a family reunion. She knew she had two gallons of lemonade that were 20% sugar. She wanted the final product to...
1. durring fission
a. work is done to pull nucleons out of th nucleus
b. the nucleons lose mass
c. mass is converted into energy (I say no to this...
1. the element kyrpton (kr) has an average atomic mass of 83.80. this means that
a. the average mass of a mixture of krypton isotopes is...
On my lab report sheet, I am asked several times to convert concentrations and standard deviations from mol/L to mmol/mL and asked to show the unit conversion calculation required. I am confused,...
Find the final temperature go the H20(l) sample.
One mol mixture of Feo and Fe3o4 containing equal moles of each on reaction with excess 02 give 'n' moles of Fe2o3 . Calculate 'N'
if a piece of iron gain 10% of its weight due to partial rusting into Fe2o3 the % of total iron that has rusted is ?
it is a true or false question
Atomic Weight of two elements 'A' and 'B' respectively are 32 and 16 .They combine to form two gases AB2 and AB4 and the Mixture is found to have a vapor density of 38.4. the no of...
How many oxygen molecules are in 22.4 liters of oxygen gas at 273 K and 101.3 kPa?
A)6.023 × 1023
B)1.2046 × 1024
C)2.24 × 10234
D)1.3491 × 1025
A student reacted with the following unknown metal, M, with HCI and collecyed the following data : mass of metal = 0.300, volume of water displaced = 227.3 mL, temperature of H2 =25C , barometric...
2.5 g of a mixture of a BaO and CaO when heated with h2so4 ,produce 4.713g of the mixed sulphates . Find the percentage of BaO present in the mixture
If 150g of carbon react with 250g of cl2 and the reaction has an 85% yield , how many gram of ccl4 are produced ?
no of oxygen atom in 10ml of h20 (l)
solve the following problems. b sure to show all your work and use correct units for your answer.
I'm also stuck on some other problems just like it. Could I have some simple step-by-steps, please? Thank you so much.
In lab today, we measured the actual yield and melting point of aspirin that we had made in lab last week. Our actual yield was 2.87 grams. The theoretical yield was 2.9 g, so the percent...
what is difference between atomic mass and atomic weight ? Explain
If AgNO3 solution is added to a solution containing Br- ions until the silver ion concentration is 8.17 x 10-5, what is the Br- ion concentration? The Ksp for AgBr is 5.2 x 10-13