Its' All relative
This is the number of sig figs in 1023.20
What is six significant figures
Convert 78,012ug into g (report your answer with 2 sig figs)
.078 g
How would you write the isotope of Phosphorus that has an extra neutron?
31P
How many moles of Oxygen are in 3mols of CO2
6 mols of oxygen
How would you classify this? Mixture or Pure Substance?
homogeneus
What is the mass in g of 20.L of apple juice? (density of apple juice is 1.05 g/cm³)
21000g or 2.1*104g
How many electrons are in Aluminium that has a positive three charge?
What is the molar mass of this compound: CH2N2H4
46.078 g/mol
(423.17 - 339.2) / 39.45 = ?
2.13
What is the mass of an iron block with dimensions 11m x 12m x 13m? (iron density = 7.874g/cm^3)
1.4*1010 g
estimate the mass of 12C
12 amu
how many mols are in 5.24*1024 molecules
8.70 moles
Name three of the naturally occurring diatomic elements. (there are 7 you need to know)
Have No Fear Of Ice Cold Beer!
Hydrogen, Nitrogen, Fluorine, Oxygen, Iodine, Chlorine, Bromine
If you are traveling 20.00 m/s, how many kilometers per hour are you traveling?
72.00 km/hr
What is the Atomic number, number of protons, number of neutrons, mass number and number of electrons, of 11B-?
Atomic Number: 5
protons: 5
neutrons: 6
Mass number: 11
electrons: 6
write the empirical formula of C9H18O3N12
C3H6O1N4
Find the error:
12g H2O --> 1.2g H2 + 10.3g O2
Find the error:
12g H2O --> 1.2g H2 + 10.3g O2
How many gallons of gas would you need to travel 78.0 km if you can travel 40. m for every Liter? (1 gal = 3.785 L)
520 gal
If Br has two isotopes, 79Br and 81Br, respectively with a mass of 78.418amu and 50.69% naturally abundant and a mass of 80.91amu and 49.31% naturally occuring, what is the amu of Bromine?
79.65 amu
How many molecules of Hydrogen in 3.74 mols of CH4?
9.01 *1024 molecules