A
The conjugate base of HNO₂
What is NO₂⁻
According to the scientific definition, this quantity measures the amount of matter in an object, regardless of gravity.
What is mass?
How many moles are in 4.8×10²⁴ molecules of methane CH2?
What is 8.0 mol?
Matter that maintains a definite shape.
What is a solid?
When oxygen gains electrons, it forms this common ion.
What is O²⁻
Silicon-28 has this many protons and neutrons.
What are 14 protons and 14 neutrons?
The reaction: SO₂ + H₂O → H₂SO₃ is this kind of chemical reaction
What is a combination reaction?
The chemical name for the compound with the formula P2O3
diphosphorus trioxide
A saline solution contains 0.25 g NaCl per 0.20 L. What's it molarity approximately .
0.021 M
The temperature in Kelvin corresponding to 98.9°C
What is 372 K?
For molecules like MgO2 that consist of different elements and multiple atoms, they are classified as this
What are heterogeneous and triatomic molecules?
What is the hydroxide ion concentration when [H₃O⁺] = 1×10⁻12 M
What is 1×10⁻² M?
This type of solution resists pH changes when acids or bases are added.
What are buffer solutions?
The molar mass of Calcium Chloride,CaCl2
What is 111 grams/mol?
How many CO2 molecules are produced when 0.5 mol of C3H8 is used:
C3H8 + 5O2 → CO2 + 4H2O
0.5