How can you tell if a lab thermometer contains mercury, a toxic substance?

A. The liquid would appear black.

B. The liquid would appear silver.

C. The thermometer is made of glass.

D. The thermometer is made of plastic.

Which of the following statements is true about the atoms of any element: a. They have the same number of protons as the atoms of all other elements. b. They have protons that are identical to the protons of all other elements. c.

A balloon filled with 1.22 l of gas at 286 k is heated until the volume is 2.86 L while the pressure remains constant. What is the temperature of gas in Kelvin. Round to nearest whole number

What type of reaction is C 12 H 22 O 11> 12C+11H2O

If a gaseous mixture is made by combining 1.55 g Ar and 1.80 g Kr in an evacuated 2.50 L container at 25.0 ∘ C, what are the partial pressures of each gas, P Ar and P Kr, and what is the total pressure, P total, exerted by the gaseous mixture

Two charged balloons 2.1 * 10-1 meters apart have a repulsive force of 1.3 * 10-1 newtons. The charge on one balloon is 8.2 * 10-7 coulombs. What is the charge on the other balloon? (k = 9.0 * 109 newton·meters2/coulomb2) 7.7 * 10-7 coulombs 8.

How many litres of 0.215 m NaCl contains 4.30 mol of this salt? Assume this solvent is H2O I'm confused on this question because little m is molality but when I looked this up on google, someone solved the problem assuming it was molarity

How can a neutral atom become a positively-charged particle?

The last column of the periodic table contains the noble gases, elements that do not easily form chemical bonds.

When pollution is removed from the air by a natural process, it

What atomic property is different in each isotope of an element?