Other Chemistry Answers

Discuss the health property of tea in terms of inhibition of starch digestions. What chemical entities and enzymes are involved? What is the health benefit from such action?

PRACTICE 1

1. What is the percent yield if 5.50 grams of hydrogen where used in a reaction that only produced 20.4 grams NH₃?

3H² + N² □ 2 NH₃

What is the hydronium ion concentration of 1g of acetic acid in 100 ml of water?

What weight of lactic acid must be dissolved in a liter of solution to produce a hydronium-ion concentration of 1×10^-5

Write a detail note on Born-Oppenheimer Approximation

If 3.00 moles of H2O are produced, hoe many of moles of oxygen must be consumed?

4. NaOH react completely with Al(NO3)3.

c. What mass of aluminum hydroxide is produce from 25 ml 1.0 M Al(NO3)3.

Lead(II) sulfate formed in the reaction of 145 mL of 0.123 M lead(II) nitrate and excess sodium sulfate.

c. Calculate the mass of lead(II) sulfate formed in the reaction

2. What is the concentration of an HNO3 solution if 25.0 ml reacts with 38.5 ml of 0.145 M K2PO4?

Give the observation of each container.

Container 1-25 ml of liquid soap in 100 ml distilled water

Container 2-25 ml of liquid soap in 100 ml tap water