Search & Filtering
how use Bohr's equation to calculate. how much energy in joule is needed to promote an electron from H-atom n=1 to the n=4 level?
How many C6H12O6 molecules are contained in a 100g sample of C6H12O6
If a bottle of concentrated hydrochloric acid contains a density of 36% by weight and a specific weight of 1.18, what is its standard of acid?
How many moles of hydrogen are required to react with 2.5 moles of oxygen to produce hydrogen oxide? Show work.
Garlic is very common in our kitchen and taste when we eat food. It makes the food delicious and give an aroma that excite you to eat. Allicin is the compound responsible for its smell. The molecular formula of a allicin is C6 H10 OS2
a. What is the molar mass of allicin?
b. How many moles of allicin are present in 8.00 mg of this substance?
c. How many molecules of allicin are in 4.00 mg of this substance
d. How many S atoms are present in 2.00 mg of allicin?
Five hundred (500) milliliters of aqueous solution contains thirty (30) milligrams of zinc nitrate (Zn(N03)2 . The density of the aqueous solution is 1 gram per milliliter (1 g/ml). The atomic masses : Zn = 65.39 , N = 14.00674 , O = 15.994 , Compute for the concentration of zinc nitrate in the aqueous solution in terms of mass fraction (mi), parts per million (ppm), parts per billion (ppb), parts per trillion (ppt), milligrams per liter (m/l) and Molarity (M).
Calculate the number of formula units of Li2CO3 present in a 0.500g sample of lithium carbonate. Li=7, C=12, O=16
What volume of a 0.300 M solution of aluminum fluoride would be required to obtain 14.0 g of aluminum fluoride
HOW MUCH ENERGY IS REQUIRED TO HEAT 80 grams of water from 26°C to 48°C ? the
specific heat capacity of water is 4.184 J/g °C.
The allowed concentration level of vinyl chloride, CHCL in a chemical plant is
