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,...
A 10.0-gram sample of H2O(l) at 23.0°C absorbs 209 joules of heat. What is the final temperature of the H2O(l) sample?
Find the final temperature go the H20(l) sample.
it is a true or false question
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 ?
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
pls tell today itself
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
how to calculate mole of electron proton and nutron
When dealing with unbranched alkanes, the general trend is for boiling points to increase as CH2 groups are added. However, the boiling point increase between smaller alkanes, such as from Methane...
finding quite tricky help me plsssss