A20-l flask contains a mixture of nitrogen gas and oxygen gas at 25 °c.
the total pressure of...
Chemistry, 01.10.2019 22:30 daniella1304
A20-l flask contains a mixture of nitrogen gas and oxygen gas at 25 °c.
the total pressure of the gaseous mixture is 0.91 atm, and the mixture is
own to contain 0.050 mol n2. calculate the partial pressure of oxygen
and the moles of oxygen present.
Answers: 1
Chemistry, 22.06.2019 00:00
What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)? a. 5.0 × 103 b. 5.0 × 10-3 c. 5.0 × 1017 d. 5.0 × 10-17
Answers: 1
Chemistry, 23.06.2019 00:00
How many peaks will be present in a mass spectrum for brcl?
Answers: 1
Chemistry, 23.06.2019 07:00
An unknown substance is a white solid at room temperature and has a melting point of 78 °c. which of the following substances is most likely to be the identity of the unknown sample? a. naphthalene, a molecular solid with the formula c10h8 b. silica, a network solid held together by covalent bonds with the formula sio2 c. calcium chloride, an ionic compound with the formula cacl2 d. water, an molecular compound with the formula h2o
Answers: 2
Chemistry, 23.06.2019 09:30
Which of the following is not a characteristic of a hydrogen bond? 1. it is responsible for the unusual physical properties of water. 2. it is weaker than a covalent bond. 3. it is stronger than other dipole-dipole interactions. 4. it can occur when hydrogen is covalently bound to very electronegative elements liks f, cl, br and i.
Answers: 1
Mathematics, 08.11.2019 20:31
Mathematics, 08.11.2019 20:31