If someone wanted to cut an apple in half she would use

1. a lever

2. a wheel and axle

3. Pulley

4. a wedge

What is the volume of 4.2 moles of Ca (NO3) 2 at STP

Which type or types of waves are mechanical? A. Longitudinal B. Transverse C. Electromagnetic D. Both Longitudinal and Transverse

Balance: (NH4) 2CO3-->NH3+H2O+CO2 ... ?

Which element has an isotope mass number of 32 and is used as an ecological tracer?

You performed the experiment using air which we know is actually a mixture of several gases. would the results of this experiment be improved

How many moles are in 4,55 X 10^23 molecules of CO2 (rounded)

In standardization of NaOH solution, a student found that 25.55cm3 of base neutralized exactly 21.35cm3 of 0.12M HCl. Find the molarity of the NaOH.

Which is a base unit in SI? A. centimeter B. kilogram C. gram D. grams/milliliter

The primary mechanism for converting atmospheric carbon into usable forms for life on earth is achieved by

For a particular collision, she detects the emitted products and find 15 protons, 2 antiprotons, 7 positrons, and 24 neutral particles. How many electrons are also emitted