Name two nineteenth century scientists-one who developed the laboratory burner

in common use today, and the other who studied the spectra of colored flames

produced by a variety of elements.

Why are changes in phase physical changes?

Examine the reaction equation. CH4 + O2 →H2O + CO2 What coefficients will balance the equation? A) 2, 3, 2, 2 B) 1, 3, 2, 1 C) 1, 2, 2, 1 D) 1, 1, 1, 1

If a specimen exhibited 1/8th of the original carbon-14, how many years has it been since that specimen was alive?

A real gas behaves most nearly like an ideal gas Question 3 options: at high pressure an low temperature. at low pressure and low temperature. at high pressure and high temperature. at low pressure and high temperature. Save

If 35.7 kPa of Bromine gas takes up 41.3 L, how much volume will the gas take up at 13.8 kPa

When dos the spring tide occur

As ice transforms into steam, Question options: new molecules are formed. the types of atoms are changed. energy is absorbed by the molecules. the mass of the molecules is increased.

Why do chemists consider the periodic table so useful?

Plates include large sections of Earth Oceanic or Continental

How many joules of heat are needed to raise the temperature of 1.5 g of aluminum at 45°C, if the specific heat of aluminum is 0.75 J/g°C? Group of answer choices