indicate whether each of these is a pure substance or a mixture give a brief explanation for each.  pulp free orange juice  Ibuprofen  chlorine gas tootsiebpop lollipop

The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. The students calculate the density of the rock. They determine the identity of the rock based on the density ranges in the table.   The students most likely have which type of rock?   Coal ⊝   Peridotite ⊝   Dolomite ⊝   Sandstone ⊝ CLEAR ALL

The density of water is 1.00 g/mL. If your swimming pool holds 208,000 gallons of water, what is the set up that outline the steps to find the weight of the water in a filled swimming pool in tons? O 208000 gal x 208000 gal x 208000 gal x 208000 gal x 3.7854 L 1 gal 3.7854 L 1 gal 3.7854 L 1 gal 3.7854 L 1 gal x X X x 1000 L 1 mL X 1L 1000 mL 1000 mL 1 L 1 mL 1000 L 1.00 9 1 mL X X X X 1.00 g 1mL 1.00 g 1 ml 1.00 g 1 mL 1 lb 453.59 g X X X X 1 lb 453.59 g 1 lb 453.59 g 1 lb 453.59 g 1 ton 2000 lb X X X 1 ton 2000 lb 1 ton 2000 1 ton 2000 lb

Which of the following statements about the current classification scheme for all life on this planet are true (note, there are more than one correct answer). O The closest relatives to the Animal Kingdom which includes humans are the Fungi The taxonomic system arranges organisms from the most primitive, like fungi and bacteria, to the most advanced, like humans All life can best be separated into 3 Domains: Bacteria, Archaea and Eukarya All life can best be separated into 5 main Kingdoms: Plants, Animals, Fungi, Bacteria and Protists All life can best be separated into 6 main Kingdoms: Plants, Bacteria, Archaea, Animals, Fungi, Protists and Plants Show 11:03 PM 1/17/2021 ch 近

At one point in time, the price of gold was about $1400 per ounce, while that of silver was about $20 an ounce. The "ounce" in this case is the troy ounce, which is equal to 31.1035 gg. (The more familiar avoirdupois ounce is equal to 28.35 g.) The density of gold is 19.3 g/cm3g/cm3 and that of silver is 10.5 g/cm3. If you found a spherical gold nugget worth $3.00 million, what would be its diameter? How much would a silver nugget of that size be worth?

A piece of metal with a mass of 114 g was placed into a graduated cylinder that contained 25.00 mL of water, raising the water level to 42.50 mL. What is the density of the metal? 7.25 g/cm³ 2.68 g/cm³ • 6.51 g/cm³ Which of the following is an example of a heterogeneous mixture? • iron • tin can 0.154 g/cm³ 0.592 g/cm³ brass gravel uranium How many cubic centimeters of ore containing 0.22% by mass gold must be processed to obtain $100 worth of gold? The density of the ore is 8.0 g/cm³ and the price of gold is $418 per troy ounce. (14.6 troy oz = 1.0 ordinary pound, called an avoirdupois pound; 1 lb = 454 g) 9.3 x 10¹ cm3³ • 4.2 x 10² cm³ • 6 200 cm³ 42 cm³ • 2.7 x 104 cm³

A 500 mL bottle of water contains 100 ppm of calcium.  The recommended daily intake of calcium for teenagers is 1300 mg. How many bottles of water would you need to drink in order get this amount of calcium?  (note:  the density of water is 1 g/mL)

Complete each of the following sentences by placing the word chemical or physical in the blank: The crushing of rocks to make gravel is a procedure. The burning of wood is a process. Converting water into hydrogen and oxygen is a procedure. The freezing of a liquid is a process.

Which would be the proper unit conversion?

If a pure material decomposes when heated into simpler substances, this proves that the material was a compound.   True/False