Which of the following is an example of sliding friction?

Question 5 options:

Rubbing sticks together to create a fire

A marble rolling down a street

Laying in bed reading a book

Leaning against a rock to take a bre

The ways in which electrons are arranged around the nuclei of atoms are called

How does cells in a human body and in an gold medal differ

For the separation of the unknown mixture, you are instructed to isolate the amine followed by the acid and finally the neutral. Does the order matter? If not, what other orders could be followed?

2. Which of the following substances is the most soluble in water? carbon sodium chloride bromine methane

What do you think about our current forms of recycling and why?

4) Acompound has an empirical formula of Na2co3, and a molar mass of 3.18g/mol. Find its molecular formula.

How many molecules of glucose, C6H12O6, can be "burned" biologically when 283.2 grams of oxygen is a available?

Why does acids that has been accidentally spilled on a book cause the colour of the book cover and the ink to change?

How many moles of H2O will be required to make 19.2 moles of O2

Calculate the energy required to heat 406.0mg of cyclohexane from 33.5°C to 38.9°C. Assume the specific heat capacity of cyclohexane under these conditions is 1.85·J·g^-1K^-1. Be sure your answer has the correct number of significant digits.