Questions tagged 'Chemistry'
452 questions
what is the correct formula for K2(NO3)2?
I was given the formula K2(NO3)2, but I believe it is incorrect. Can someone help me determine the correct chemical formula for this compound?
Nov 14, 2024
If the standard solutions had been unknowingly been made up to be .0024M AgNO3 and .004M K2CrO4…?
If the standard solutions were unknowingly prepared to be 0.0024 M AgNO3 and 0.004 M K2CrO4, how would this affect the results? Can you explain the implications of these concentrations on the outcomes...
Nov 14, 2024
an anion always what?
An anion is always: A. positively charged B. a group of two or more atoms with a positive charge C. a combination of a metal and a nonmetal D. capable of forming covalent bonds E. negatively charged
Suppose that 1.15g of rubbing alcohol (C3H8O) evaporates from a 67.0g aluminum block. If the aluminum block is?
Suppose that 1.15 g of rubbing alcohol (C3H8O) evaporates from a 67.0 g aluminum block. If the aluminum block is initially at 25 degrees Celsius, what is the final temperature of the block after the e...
help with nomenclature of an alkane?
I need help with the nomenclature of an alkane. Specifically, I’m trying to figure out the number of ethyl and methyl groups in 4-sec-butyl-5-ethyl-3-methyloctane. When I analyze the compound, it app...
Chemistry Homework Problem?
A piece of aluminum foil measuring 1.00 cm on each side and 0.550 mm thick is allowed to react with bromine to form aluminum bromide. a) How many moles of aluminum were used? (The density of aluminum...
How many grams of H2 gas would be produced by the complete reaction of the aluminum block?
How many grams of hydrogen gas (H2) would be produced from the complete reaction of an aluminum block? Sulfuric acid can dissolve aluminum metal according to the following reaction: 2Al(s) + 3H2SO4(a...
Nov 13, 2024
If 0.86 mole of MnO2 and 48.9 g of HCl react, how many grams of Cl2 will be produced?
If 0.86 moles of MnO2 react with 48.9 grams of HCl, how many grams of Cl2 will be produced?
having trouble naming these acids and bases?
1) What is the name of the Arrhenius acid that contains the fluoride anion? 2) What is the name of the Arrhenius acid that contains the ascorbate anion? 3) What is the name of the Arrhenius acid that...
Nov 13, 2024
How many grams of CO2 are used when 8.5g of O2 are produced?
How many grams of CO2 are produced when 8.5 g of O2 are generated? Here’s the balanced equation for the reaction: 4 KO2 + 2 CO2 → 2 K2CO3 + 3 O2. I would appreciate it if you could show the steps ta...