The positively charged particle in the nucleus of an atom is the

1. neutron

2. magnetron

3. electron

4. proton

4. If an experimental value for a given observation was 415 nm while the theoretical value was 435.8 nm, what is the percent error of the observation?

Where in a data table should units of measurement be shown? A. in a separate column after the column of data values B. in parentheses, in the title of the table C. in the headings of columns that list the data values D.

A researcher pumps 0.0128 moles of nitrogen (N2) into a 450 ml chamber held at 20 oC. What is the pressure inside the chamber?

When a potassium atom forms an ion, it loses one electron. What is the electrical charge of the potassium ion? A. -2 B. -1 C. +2 D. +1

What is true about the vapor pressure of a liquid

How many moles of CO will be produced, if 32.5grams of H2O are produced? C6H6S+6O2=>6CO+3H2O+SO3

Identify and briefly describe two ecosystems in your community that are beyond schoolyard

Is N2H2 a ionic compound?

What do Lewis dot structures show?

300 grams of a compound which contains only carbon, hydrogen and oxygen is analyzed and found to contain the exact same percentage of carbon as it has oxygen. The percentage of hydrogen is known to be 5.98823%.