Chemistry IBDP Structure 1 - New syllabus

0.02mol of zinc is added to 10.0cm3 of 1.0mol dm-3 hydrochloric acid.

How many moles of hydrogen are produced?

• 0.005

• 0.01

• 0.02

• 0.04

8.8g of an oxide of nitrogen contains 3.2g of oxygen. What is the empirical formula of the compound?

• N2O5

• N2O

• NO2

• NO

Naturally occurring gallium consists of the isotopes ⁷¹Ga and ⁶⁹Ga. What is the approximate percentage abundance of ⁶⁹Ga? Mr (Ga) = 69.72.

• 40%

• 50%

• 60%

• 75%

Which of the following is the electron configuration of a metallic element?

• [Ne] 3s2 3p2

• [Ne] 3s2 3p4

• [Ne] 3s2 3p6 3d3 4s2

• [Ne] 3s2 3p6 3d10 4s2 4p5

For which compound is the empirical formula the same as the molecular formula?

Ar (H) = 1; Ar (C) = 12; Ar (O) = 16

• A

• B

• C

• D

Which diagram represents a heterogeneous mixture?

• A

• B

• C

• D

What volume of carbon dioxide, CO2(g), can be obtained by reacting 1dm³ of methane, CH4(g), with 1dm³ of oxygen, O2 (g)?

• 0.5dm3

• 1dm3

• 2dm3

• 6dm3

What is the empirical formula of a hydrocarbon with 75% carbon and 25% hydrogen by mass?

• C3H

• CH2

• C2H6

• CH4

What is the ground state electron configuration of an atom of chromium, Cr (Z = 24)?

• [Ar]3d⁶

• [Ar]4s² 3d⁴

• [Ar]4s¹ 3d⁵

• [Ar]4s² 4p⁴

Which describes an atom of bismuth, Bi (Z = 83)?

• A

• B

• C

• D