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Muscles and energy usage!?
Before each marathon that she runs Rita Racer loads up on carbohydrates, particularly pasta. And she stops major training a couple of days before the race. Explain why Rita would do this.
1 AnswerRunning5 years agoCalculate molar mass of unknown?
PLEASE HELP
A 1.00g sample of an unknown solute is dissolved in 8.00g of lauric acid, which lowers the freezing point by 5 degrees Celsius. Calculate the molar mass of the unknown
1 AnswerChemistry5 years agoHow would you prepare 50.0mL of 1.20 M HCL from 12.0 M HCl?
2 AnswersChemistry5 years agoWhy do metals have different oxidation potentials?
Hint: explain it as you might explain electronegativity differences.
1 AnswerChemistry5 years agoDelta G CHEMISTRY?
PLEASE HELP ME IN CLUELESS
A. NaHCO3(s)⇌NaOH(s)+CO2(g)
Free-energy change for these reactions at 298 K.
B. 2HBr(g)+Cl2(g)⇌2HCl(g)+Br2(g)
Free-energy change for these reactions at 298 K.
C. 2SO2(g)+O2(g)⇌2SO3(g)
Free-energy change for these reactions at 298 K.
2 AnswersChemistry5 years agoHow would a soap molecule look in water after five hours rather than one second? (chemistry)?
What would the molecular arrangement look like?
2 AnswersChemistry5 years agoEmulsifiers! Chemistry?
Which of the following solutions are emulsifiers:olive oil, water, soap, or detergent?
1 AnswerChemistry5 years agoChemistry buffer pH help!?
Can someone please show me how to do this and where to plug the numbers into:
If you add 2.50mL of 0.150M HCl to 100mL of a buffer consisting of 0.100M CH3COOH and 0.200M CH3COONa, what will be the change in pH? (Ka of CH3COOH is 1.7x10^-5)
1 AnswerChemistry5 years agoWrite an equation for the reaction in which H2C6H7O5−(aq) acts as a base in H2O(l).?
Identify all of the phases in your answer.
2 AnswersChemistry5 years agoconjugate acids/ bases How do i do thiS??!?
Give the conjugate acid of the following Bronsted-Lowry base: C2H5NH2.
Give the conjugate acid of the following Bronsted-Lowry base: CO32−.
Give the conjugate base of the following Bronsted-Lowry acid: HPO42−.
Give the conjugate base of the following Bronsted-Lowry acid: C6H5COOH.
2 AnswersChemistry5 years agocalculate poh of a solution?
calculate (or just set up the equation so i could do it) of ooh of the following:
.5M HCl
.30M KOH
.180M NH4Cl
1 AnswerChemistry5 years agocalculate ph of a solution?
please help with at least the equation and plugging in numbers
ph of .500M HCl
ph of .300M KOH
ph of .180M NH4Cl
1 AnswerChemistry5 years agoChem help! determining volume!?
Describe how you could experimentally determine the volume of mixing Vmix in a .95 mole fraction A and 0.05 mole fraction B.
I don't even know where to begin! Please Help!
1 AnswerHomework Help5 years agoHow many air molecules are in a 15.0×12.0×10.0 ft room?.?
How many air molecules are in a 15.0×12.0×10.0 ft room? Assume atmospheric pressure of 1.00 atm, a room temperature of 20.0 ∘C, and ideal behavior.
1 AnswerChemistry5 years agoHow high in meters must a column of water be to exert a pressure equal to that of a 760-mm column of mercury?
The density of water is 1.0g/mL, whereas that of mercury is 13.6g/mL.
1 AnswerChemistry5 years agoHOW DO I SET THIS UP! CHEM!?
5mL .30M H3PO4 = ? number of moles of H3PO4
5mL 2M NaOH= ? numb er of moles of NaOH
1 AnswerChemistry6 years agoEstimate the heat of neutralization of H3PO4 in kJ/mol given these data:?
Heat transferred = 2.3 x 102 J
Moles of H3PO4 = 1.5 x 10−3 mol
Moles of NaOH = 5.0 x 10−3 mol
1 AnswerChemistry6 years ago