Answer: The volume of the box on the right is twice that

Introductory Chemistry 5
Classify each substance as a pure substance or a mixture. If it is a pure substance, classify it as an element or a compound. If it is a mixture, classify it as homogeneous or heterogeneous. (a) helium gas (b) clean air (c) rocky road ice cream (d) concrete

College Physics 1
Problem 6PE A team of eight dogs pulls a sled with waxed wood runners on wet snow (mush!). The dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg. (a) Calculate the magnitude of the acceleration starting from rest if each dog exerts an average force of 185

General, Organic, and Biological Chemistry: Structures of Life 4
Problem 10SC What is the formula of iodine heptafluoride?

Chemistry 11
When ammonium nitrite (\(\mathrm{NH}_{4} \mathrm{NO}_{2}\)) is heated, it decomposes to give nitrogen gas. This property is used to inflate some tennis balls. (a) Write a balanced equation for the reaction. (b) Calculate the quantity (in grams) of \(\mathrm{NH}_{4} \mathrm{NO}_{2}\) needed

Myers' Psychology for AP 2
By seeking to measure atoms of the mind, who established the first psychology laboratory? a. Sigmund Freud b. John B. Watson c. Wilhelm Wundt

Chemistry: Matter & Change 1
How many moles contain each of the following? a. 5.75 1 0 24 atoms Al b. 2.50 1 0 20 atoms Fe

Anatomy & Physiology 1
What is the position of the body when it is in the normal anatomical position? a. The person is prone with upper limbs, including palms, touching sides and lower limbs touching at sides. b. The person is standing facing the observer, with upper limbs extended out at a ninety-degree angle from the tor

Chemistry for today : general, organic, and biochemistry 9
Most of the remaining water in washed laboratory glassware can be removed by rinsing the glassware with acetone (propanone). Explain how this process works (acetone is much more volatile than water).