Sig Figs
The number SIGFIGS in 2.074
What is 4?
Rust forming on a nail is a example of this type of change.
What is chemical change?
This block contains the transition metals.
What is D?
CO2
What is carbon dioxide?
The number of atoms in the following molecule.
(NH4)2Cr2O7
What is 19?
The number SIGFIGS in 120,000
What is 2?
Melting ice and sugar dissolving in water are examples of this.
Fluorine has this many valance electrons.
What is 7?
N2O4
What is dinitrogen tetroxide?
The molar mass of C6H12O6.
What is 180.1 g/mol?
The number SIGFIGS in 0.0270.
What is 3?
Which of the following is a chemical property for a sample of iron?
A. Its volume is 8.41 cm3
B. Its mass is 2.65 grams.
C. It reacts with oxygen in the air to form iron oxide
D. The iron wire is 3.49 m in length.
What is C?
H2, N2, O2, F2, I2, Cl2, and Br2 are examples of _______ molecules.
What is diatomic?
MgBr2
What is magnesium bromide?
The mass in grams of 1.000 mole of a compound whose formula is C3H7O2.
What is 75.0 g?
The number SIGFIGS in 0.040.
What is 2?
The following chemical reaction takes place.
2 H2O ---> 2 H2 + O2
This is an example of _________ reaction.
What is decomposition?
This element has the electron configuration shown below.
1s22s22p63s23p1
What is aluminum?
Fe2O3
What is iron (III) oxide?
The molar mass of a compound X if 0.400 moles weigh 32.6 g.
What is 81.5 g/mol?
The density of aluminum is 2.7 g/mL. A 5.4 g sample of aluminum has this volume (use correct SIGFIGS).
What is 2.0?
The following chemical reaction takes place.
NaCl + KBr ---> KCl + NaBr
This is an example of _________ reaction.
What is double replacement?
The following the is orbital configuration for ________.
↑↓ ↑↓ ↑ ↑ ↑
What is nitrogen?
Sn(NO3)4
What is tin (IV) nitrate?
The shape of the H2O molecule.
What is bent?