Anthony walks to the pizza place for lunch. He walk 1km east then 1km south and then 1km east again what distance did he cover? What was his displacement?

Is 2h2 + o2 2h2o a balanced chemical equation? is it obeying the law of conservation of matter

How does Dr. Hoffmann's ultrasound device benefit society? (modern chemistry textbook page 180).

Helen adjusts the armature of an electric generator by increasing the number of coils around the iron core. what is helen most likely trying to do?

Explain the difference between two types of elements with respect to the atoms

Using the following balanced equation to the question that follows. 1 Zn + 2 MnO2 + 1 H2O → 1 Zn (OH) 2 + 1 Mn2O3 How many moles of MnO2 are needed to produce 8.54 moles of Zn (OH) 2?

What is the mass (in grams) of 9.09x10^24 molecules of methanol (CH3OH) ? AND How many moles of N are in 0.183g of N2O?

What are the basic building blocks of matter? A) molecules B) atoms C) electrons D) compounds

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?

8. Write a balanced chemical equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, and Cas.