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How many gallons of a 10 percent ammonia solution should be mixed with 50 gallons of a 30 percent ammonia solution to make a 15 percent ammonia solution?
Make an equation: x(.10) = 50gal(.15) Solve algebraically: x = 75 gal
What is meant by mass percentage of solution?
Mass% is the ratio of elements in a given quantity. if you mix 20 parts of A with 30 parts of B you will have a solution with 50 parts AB so take the quantity of A (20) and divide it by the total volume (50) and multiply by 100. This means you have 40% of A in your solution. likewise with B (30/50) x 100 = 60% by mass before not to confuse %mass with mole ratio as this is significantly different
Nitrogen and hyrogen form ammonia by the reaction N2 plus 3H2 to 2NH3. If 56 grams of nitrogen and 85 grams of hydrogen react to form 62 grams of ammonia. What is the percent yield?
Multiple Choice Question: # 8A.25%B.50%C.90%D.100%The answer is C.Source: Holt California Chemistry, Page 334.
What does 12 K mean on gold jewelry?
12k Gold Jewelry is about 50% gold. 12 parts are gold and 12 parts are additional metals, a mix of silver and copper.
What is the chemical formula for invisible ink?
"Method OneThe simplest method is to use lemon or onion juice to write with and let it dry. To reveal the writing, heat the paper with a iron, or other heat source.Method TwoA more sophisticated approach uses an acid or base to write with and a pH indicator to reveal the writing. (pH is a measure of how acidic or alkaline a substance is - a pH of 1 is extremely acidic, 7 is neutral, and 14 is extremely alkaline). pH indicators change colour when mixed with acidic or alkaline substances.To write with: White vinegar (which contains acetic acid) is probably the most convenient source of an acidic 'ink'. To make an alkaline 'ink' try a mixture of baking soda and water (around 50/50). With a small paint brush, write on a piece of paper using your chosen 'ink' and allow it to dry.To reveal the writing:There is a natural pH indicator (a pigment called flavin) found in apple skin, grapes and red cabbage (amongst other things). Boil half a red cabbage in 5 cups of water. Filter out the cabbage, and spray or paint the juice over your invisible writing. I tried doing this with apple skin (I imagine this is only red apples), which also worked.If you just want to see the pH indicator working, put a little of your cabbage/apple juice in the bottom of a glass and note the colour. Now add some white vinegar, noticing the colour change. Next add some baking soda. You will see the colour change back again. Enjoy :-) "
What does a Spider Bite piercing cost at Texarkana Ink?
spider bite cost 50 at texrkana ink
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Ink and Paint Club - 1997 Storyteller Mickey 1-50 was released on: USA: 23 January 1998
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