Determine the concentration of a solution of lactic acid
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.59. What was the concentration of the solution? The Ka of lactic acid is 1.4 10-4.
Expected delivery within 24 Hours
Magnesium hydroxide is 54.87% oxygen by mass. How much oxygen is in 153 g of the compound? Answer in units of g
Chlorophyll found in plant cells and essential to the process of photosyntheses, contains 2.72% Mg by mass. Assuming one magnesium atom per chlorophyll molecule, calculate the molecular mass of chlorophyll?
Balance the following molecular equations for these reactions. Write the ionic equation for the reactions. Write the net ionic equation for the reactions.
From the damage sustained, police estimate that the car was moving at 18 at the time of the collision. They also measure skid marks 34 long. How fast was the motorist going when the brakes were first applied?
A chemist wanted to determine the concentration of a solution of lactic acid, HC3H5O3. She found that the pH of the solution was 2.59. What was the concentration of the solution?
Consider a local concentration of 106 units per cm3 which drops by 10% over a distance of 1 cm. Then the gradient is -105 [units cm-4]. Assume the diffusivity is 103 [cm2/s]. Calculate the flux.
A cook wants to heat 2.00 of water from 35.0 to 100.0 .If he uses the combustion of natural gas (which is exothermic) to heat the water, how much natural gas will he need to burn? Natural gas produces 49.3 of heat per gram. (For the sake of simpl
Find maximum and minimum frequencies of sound detected by the detector, if vibration frequency of each block is 3.5Hz.(sound velocity is 330m/s).
How much work is done by the system when 2.00 moles of O2 expand from a volume of 3.00 liters to a volume of 3.5 liters against a constant external pressure of 0.0100atm? Answer in units of J.
1941320
Questions Asked
3,689
Active Tutors
1449251
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
All of the following are true of the diagnostic procedure of mammography except O it is very valuable for the detection of early breast cancers.
A doctor released the results of clinical trials for a vaccine to prevent a particular disease. In these clinical? trials, 200,000 children were randomly divide
The nurse in the emergency department conducts the initial assessment of a school-age client reporting severe upper arm pain.
Q1. What are the causes of skin cancer? What are the risk factors of skin cancer? Q2. Describe in detail the pathophysiology of the disorder.
Question: The nurse assesses an older adult client who reports a 2-day history of vomiting and diarrhea.
The study by Melnyk et al. (2019) identifies strategies for implementing evidence-based practice (EBP) such as leadership support, ongoing training,
A 50-year-old black male patient, was seen in urgent care with complaints of fever, chills, chest pain, cough, common cold like symptoms, nausea, vomiting,