Why does helium raise you voice

Find the volume of 0.100 M hydrochloric acid necessary to react completely with 1.51 g Al (OH) 3.

If two moles of aluminum chloride are dissolved in two liters of water, how does the vapor pressure of the water change?

Draw two constitutional isomers that share the molecular formula C3H7Cl. Your structures will have the same molecular formula but will have different connectivities.

Identify this symbol. cl-. 1) anion 2) cation 3) atom 4) molecule

Which of these formulas corresponds to that of a straight-chain alkane A) C5H10 B) C6H12 C) C5H12 D) C7H14

Chemistry Lab Question: Filtration Compare the size the particles of refined sand with the size of particles of the dissolved salt in the mixture? Compare the size of the pores in the filter paper, to the sizes of the sand and salt particles?

What is the [oh-] in a sample of lime juice with a ph of 2.0?

What is the subscript present in NaCl?

Identify each element as a metal, metalloid, or nonmetal. a. gold b. silicon c. manganese d. sulfur e. barium

Extreme (1, 2, or 3) in the center of nebulae causes hydrogen atoms to shed their electrons and collide with one another. The (4, 5, or 6) of the collisions cause the smaller, bare nuclei to fuse into large helium nuclei. 1. expansion 2. heat 3.