Chemistry

A water treatment tablet contains 20.0 mg of tetraglycine hydroperiodide, 40.0% of which is available as soluble iodine. If two tablets are used to treat 1.00 liter of drinking water, what is the concentration in ppm of iodine in the treated water
1 Answer
I am doing a break-out room and it won't let me pass I think I have all the other questions correct so this is the only one I'm not sure about.
2 Answers
How are nuclear fission and nuclear fusion similar?A. Both processes combine smaller nuclei into larger nuclei.B. Both processes convert mass into energy.C. Both processes are used to produce electrical power.D. Both processes occur in stars.
1 Answer
Can someone please help
1 Answer
Label the marrow, spongy bone, and cortical bone on this bone image.
1 Answer
Why the colloid can't be filitred?Write it's 4 examples.
1 Answer
There are moles of carbon present in 100 g of acompound with the following percentage composition:C= 40.0%, H = 6.72%, O = 53.29%.
2 Answers
______ is the movement of sediment from one place to another
1 Answer
Use the following information to calculate the solubility product constant, Ksp, for CuCl. A saturated solution of CuCl in water was prepared and filtered. From the filtrate, 1.0 L was measured out into a beaker and evaporated to dryness. The solid CuCl residue recovered in the beaker was found to weigh 0.041g.A. Ksp =1.7 109B. Ksp = 1.7 107C. Ksp = 1.7 105D. Ksp = 4.3 104E. Ksp = 2.1 102
1 Answer
What is the final molarity of a solution when 250 mL H2O is added to 150 mL0,040 M NaOH(aq)?
1 Answer
How many grams of KCl are made when 5.02 moles ofZnCl2 react in the reaction below?2KMnO4 + ZnCl2 2KCl + Zn(MnO4)2lol pls help me
1 Answer
Light is a type of energy produced by the vibration of electrically charged particles.True or false?
1 Answer
Which letter indicates the most sudden change in temperature
1 Answer
Why must the mass of reactants in a chemical reactionalways equal the mass of products?
1 Answer
Those microscopic organisms perform what 2 processes that help pave the way for lichen by creating organic material.
1 Answer
A study was conducted to see if increasing the substrate concentration has an appreciable effect on the velocity of a chemical reaction. With a substrate concentration of 1.5 moles per liter, the reaction was run 15 times, with an average velocity of 7.5 micromoles per 30 minutes and a standard deviation of 1.5. With a substrate concentration of 2.0 moles per liter, 12 runs were made, yielding an average velocity of 8.8 micromoles per 30 minutes and a sample standard deviation of 1.2. Is there any reason to believe that this increase in substrate concentration causes an increase in the mean velocity of the reaction of more than 0.5 micromole per 30 minutes
1 Answer
How many grams are in 4.5 x 10^22 molecules of water? please show dimensional analysis
1 Answer
An organ system is formed by..A) two or more cells working together.B) two or more tissues working together.C) two or more organs working together. D) two or more organisms working together
1 Answer
What is the new pressure if the temperature outside is 296k and his weight causes the tire's volume to drop to 2.0 liters
1 Answer
1. what is an ethical concern about biotechnology2. list 2 examples of transgenic organism 3. write a 3-sentences summary on how biotechnology affects individual, society, and environment
1 Answer
An atom of a certain element has 19 protons, 19 electrons, and a mass number of 39. This element is very reactive. How many neutrons are in this atom?Record your answer and fill in the bubbles on your answer document. Be sure to use the correct place value.
1 Answer
Please help with this Unit Conversions problem! "Convert 7.54 kg to mg. Show your work."
1 Answer
How many atoms are in 14 moles of I? Watch your significant figures.8.4 x 1024 atoms of l8.43 x 1024 moles of I8.4 x 1023 atoms of l8.43 atoms of l
1 Answer
Predict: Based on your hypothesis, which population(s) would be hurt if bears were added?
1 Answer