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A question about empirical formulas?
A compound containing only carbon and hydrogen consists of 362 g of C and 30.1 g of H. What is the empirical formula of the compound?
a. CH
b. C2H
c.CH2
d.C2H3
e. none of these
1 AnswerChemistry1 decade agoHow many moles are there?
How many moles of Fe atoms are bonded to 6.02x10^23 atoms of O in fe2O3?
3 AnswersChemistry1 decade agoQuestion about electron dot structure?
The electron dot structore for NH3 has:
a. 3 double bonds
b. 2 pairs of non bonding e-
c.2 single bonds, 1 double bond
d. 3 single bonds
2 AnswersChemistry1 decade agoA quick Chemistry question?
When a halogen atom ionizes, the result is a...
a. postive ion b. diatomic molecule c. covalent compound d. an anion
2 AnswersChemistry1 decade agoA question about interpartcile forces...?
The substance with the weakest interparticle forces (intermolecular) is the one with a boiling point of ....
100 celsius
78 celsius
135 celsius
65 celsius
99 celsius
1 AnswerChemistry1 decade agoWhat is the molarity of the solution?
If 500 mL of HCI solution is needed to react with 2.43 grams of Mg, what is the molarity of the HCI solution??
2 AnswersChemistry1 decade agoHow many grams of HCI are present?
How many grams of HCI are there in 125mL of 1.25 M HCI(aq)??
2 AnswersChemistry1 decade agoHow many molecules are present?
The number of molecules in 64.0 grams of oxygen at STP is????
3 AnswersChemistry1 decade agoHelp! I need a quick answer?
If 2.43g of Mg react, how many grams of H2 will be formed?
3 AnswersChemistry1 decade agoa question about mass percent?
what is the percent by mass of carbon in c2h4?
2 AnswersChemistry1 decade agoWhats a good vegan vitamin?
I just discovered that the vitamins I bought contain pancreatin (yuck!) I need to find a good vegan vitamin that doesn't upset my stomach. Can someone recommend a good multi vitamin that is suitable for sensitive stomachs?? Thanks!
3 AnswersVegetarian & Vegan1 decade agoComplete the Lewis Structure?
Complete the following lewis structure
CH3 O
l l
CH3 - CH - C - C- N
This molecule has _____ sigma & ____ pibonds.
Is it 4 & 5, 1 & 5, 13 & 2 or 13 & 3?
1 AnswerChemistry1 decade agoA questions about hybridization?
The hybridization of the central atom in XeF5+ is..
sp, sp2, dsp, or d2sp3???
3 AnswersChemistry1 decade agoHelp. Question about expansion of gas..?
Calculate the work associated with the expansion of a gas from 152 L to 189 L at a constant pressure of 14 atm.
2 AnswersChemistry1 decade agoHow many moles are required?
The following unbalanced equation represents a reaction that occurs in basic solution: MnO42- + C2O42- --> MnO2 + CO 32- How many moles of MnO42- are required to produce 1 mole of CO32-?
1 AnswerChemistry1 decade agoDetermine the number of electrons involved in this reaction.?
Given the reaction 2MnO4- +5H2O2 + 6H+-->2Mn2++ 8H2O+ 5O2 determine the number of electrons involved in this reaction.
Is it 6, 8, 4, 10 or 2?
1 AnswerChemistry1 decade agoWhat is the concentration?
A student weighs out 0.568 g of KHP (molar mass = 204 g/mol) and titrates to the equivalence point with 36.78 mL of a stock NaOH solution. What is the concentration of the stock NaOH solution? KHP is an acid with one acidic proton.
0.100M, 3.15M, 0.0757M or none of these???
1 AnswerChemistry1 decade agoWhat's the coefficient?
When the equation Cl2 --> Cl- + ClO3- (basic solution) is balanced using the smallest whole-number coefficients, the coefficient of OH-> is...
2,3,4 or 6??
1 AnswerChemistry1 decade agoDoes pick up stix use animal products in their tofu dishes?
Does anyone know if pick up stix uses chicken broth, fish sauce, ect. in any of their tofu dishes? I emailed them but they never wrote back. Can someone tell me which animal products (if any) they use in their tofu dishes? Thanks!
2 AnswersVegetarian & Vegan1 decade ago