% Error
The temperature dropped from 20 degrees to 3 degrees overnight. What was the percent change in temperature?
What is 85%
What is the formula for density?
What is density = mass/volume?
How many sig figs are in 0.04021?
What is 4 sig figs?
What subatomic particle(s) is(are) atomic number based off?
What is protons?
What unit is atomic mass measured in?
What is amu?
The attendance for the basketball game was estimated to be 15,000 people but 12,500 people attended. What was the percent error?
What is 20%
What is the density of a toy boat with a mass of 75 grams and a volume of 150 cm³?
What is 0.5 g/cm3?
What is 0.003400 in scientific notation?
What is mass number?
How are isotopes different from one another?
Clyde was told to find the mass of an object that weighed 500 grams. After goofing off for ten minutes, he quickly weighed the object and reported that its mass was 458 grams. What was Clyde's percent error?
What is 8.4%
Given density of milk = 1.03 g/mL and v = 1.3 mL
What is the mass of milk in grams?
What is 1.30 g?
The nucleus of the atom contains ______ and _______
What are protons and neutrons?
If an atom has 38 e, 38 p, and 36 n, what element is it?
What is Strontium?
Naturally occurring europium (Eu) consists of two isotopes was a mass of 151 and 153. Europium-151 has an abundance of 48.03% and Europium-153 has an abundance of 51.97%. What is the atomic mass of europium?
What is 152.04 amu?
Mr. Benham estimates that it will take him 48 minutes to run 8 miles. It actually takes him 60 minutes. What was his percent error?
What is 20%
Calculate the mass of an object that has a density of 0.65 g/cm3 and a volume of 24.8 cm3
Who is the English physicist credited for discovering the electron using the cathode ray tube and proposing the plum pudding model?
Who is JJ Thomson
How many protons, electrons, and neutrons are there in Se-80?
What is 34 p, 34 e, and 46 n?
Naturally occurring element X exists in three isotopic forms: X-27 (27.977 amu, 92.21% abundance), X-28 (28.976 amu, 4.70% abundance), and X-29 (29.974 amu, 3.09% abundance). Calculate the atomic weight of X.
What is 28.09 amu?
Dy reacts with sulfuric acid to form dysprosium (III) sulfate and hydrogen gas. 9.3 grams of dysprosium (III) sulfate should have been formed, but the reaction only produced 7.910 grams. What is the percent error of this reaction?
What is 15%?
What is the volume of 60.0 g of ether if the density of ether is 0.70 g/mL?
What is 85.71 mL?
How many seconds are in a 40 hr. work week?
What is 144,000 s?
What isotope has 46 p, 46 e, and 49 n?
What is Pd-95?
Three isotopes of oxygen occur in nature: oxygen-16, oxygen-17, oxygen-18. If the atomic mass of oxygen is 16.001, which of the three isotopes, if any, is the most abundant?
What is O-16?