An unknown substance turns methyl orange solution red. This shows that the substance is a base. is water. is an acid. is an alkaloid.

a sample of nitrogen gas is collected in a 100ml container at a pressure of 688 mmhg and a temperature of 565 degrees Celsius how many grams of nitrogen gas are presented in this sample?

How much heat energy is absorbed when 6.83 kg of water is heated from 10.0 0C to 47.0 0C. The specific heat of water is 4.184 J/g 0C.

Grade 8 Science What are the correct answers to this Science question? Examine the list of objects below. Select E if it emits light, R if it reflects light, or B if it emits and reflects light.

All matter has mass and takes up space. True False

Which of the following has the greatest amount of thermal energy? A. 1 L water at 98 °C B. 1 L water at 70 °C C. 250 mL water at 98 °C D. 250 mL water at 70 °C

An egg is fried is that a physical or a chemical change

How many mono-; di -; and trichloro derivatives are possible for cyclopentane?

A gas occupies 3.60 L when the temperature is 45.0oC and at 1.02 atm of pressure. What temperature change (in K) will be needed to change the volume to 6.25 L at constant pressure?

When did Pangaea begin to break apart? a. 20 million years ago c. 250 million years ago b. 100 million years ago d. 2 billion years ago.

When an object is thrown, the thrower pushes the object. This causes the object to move in a motion.