Calculate the percent of a strontium sample left
Calculate the percent of a strontium sample left after 100 years. The half-life of strontium-90 is 28.1 years.
Expected delivery within 24 Hours
oleic acid has following compostions : 76.54%C, 12.13%H, 11.33% O. If the experimental molar mass is 282.g/mol, what is the molecular formula of oleic acid?
What is the half-life of a compound if 87 percent of a given sample of the compound decomposes in 65 min? Assume first-order kinetics.
3.60 g of liquid methanol, CH3OH, is placed in an empty 20.0 L container at 45.0°C. If the volume of the container is compressed to 1.40 L at 45.0°C, how many grams of vapor are present?
Gas cylinder a has a volume of 48.2L and contains N2(g) at 8.35 atm at 25 degrees C. Gas cylinder b, of unknown volume, contains He(g) at 9.50 atm and 25 degrees C.
Calculate the pH at each point indicated when 100 mL of .100 M HF is titrated with .200 M KOH: a) before addition of KOH b) after .15 mL KOH c)after addition of 50mL KOH d) after addition of 75 mL KOH.
In the titration of 50.0 mL of 1.0 M methylamine, CH3NH2 (Kb = 4.4 10-4), with 0.50 M HCl, calculate the pH under the following conditions.
A fluorinated organic gas in a cylinder is compressed from an initial volume of 960 mL at 158 Pa to 478 mL at the same temperature. What is the final pressure? Answer in units of Pa.
In an experiment, 201 mL of wet H2 is collected over water at 27 °C and a barometric pressure of 733 torr. The vapor pressure of water at 27 °C is 26.74 torr.
1925361
Questions Asked
3,689
Active Tutors
1458558
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Question: You need to enable proactive chat on a website. From which location do you need to enable it?
Using a field salesforce to perform sales-generating activities and a telemarketing salesforce to perform account servicing activities
As part of her responsibilities as a marketing manager, Deetya has completed a review of data her department has gathered through telephone interviews,
Which concept best explains the teenager's desire for a specific brand of bicycle? Group of answer choices Built environment.
Having recently completed her Master of Business Administration (MBA) degree, Mitsuki understands how important identifying and satisfying the target market
When a marketer's brand is evaluated by a target market that engages in limited decision making, the marketer's objective is to Multiple choice question.
While marketing focuses primarily on generating sales and profits, public relations serves the public interest in developing newsworthy content