What are systematic errors when reacting sodium thiosulfate with hydrochloride acid?

Ethene is the first member of the a. Alkane series b. Alkyne series c. Saturated hydrocarbons d. Unsaturated hydrocarbons e. Aromatic hydrocarbons

How many grams of H2O are formed from 7.8 grams of O2?

When a sample of aluminum with a mass of 23.625g is placed in a graduated cylinder with 22.69 ml of water the volume is raised to 31.44ml what is the density of the metal

An electromagnetic wave has a frequency of 6.00x10^8 Hz. What is the wavelength?

Which of the following equations is balanced correctly? A. 3 H2O → H2 + 3 O2 B. 2 C3H3 + O2 → 2 CO2 + H2O C. 2 C2H2 + 5 O2 → 4 CO2 + 2 H2O D. Cl2 + 2 KBr → KCl + Br2

How many valence electrons are in atom of sulfur?

My sister needs this answered! Donald is creating an experiment to determine if fertilizer affects plant color. He makes this statement: "If each plant receives a different amount of fertilizer, then the plant's color intensity will change.

What would happen to life if earth were in a different location within the solar system

Substance that undergoes a change in a chemical reaction is a. a product c. a reactant. b. a chemical. d. an enzyme.

List the number of protons, neutrons, and electrons in Iodine-127. (atomic number is 53)