Lembar kerja Kimia untuk ujian masuk keperawatan dengan jawaban

Dalam larutan garam, apa sebutan untuk garamnya?

1. AEndapan
2. BZat terlarut
3. CPelarut
4. DKatalis

Where do the mole ratios used in stoichiometry come from?

1. AThe subscripts in each formula
2. BThe molar masses of the reactants
3. CThe physical states of the substances
4. DThe coefficients of the balanced equation

What is a precipitate?

1. AA liquid that forms when a solid melts
2. BA gas that bubbles out when two solutions are mixed
3. CAn insoluble solid that forms when two solutions react
4. DA substance that speeds up a reaction

How does an antacid tablet relieve heartburn caused by excess stomach acid?

1. AA weak base in it neutralises some of the acid
2. BAn acid in it lowers the stomach pH further
3. CIt coats the stomach and stops all acid production
4. DIt turns the acid into a gas that is absorbed

Reaksi Zn + 2HCl → ZnCl₂ + H₂ termasuk jenis reaksi apa?

1. ASintesis
2. BPenggantian ganda
3. CPenggantian tunggal
4. DPenguraian

A solution has a pH of 2. What is its hydrogen ion concentration?

1. A1 × 10⁻² mol/L
2. B1 × 10⁻¹² mol/L
3. C1 × 10² mol/L
4. D2 mol/L

A carboxylic acid reacts with an alcohol in the presence of an acid catalyst. What are the products?

1. AAn ester and water
2. BA salt and hydrogen
3. CAn amino acid and carbon dioxide
4. DAn alkane and oxygen

Which element has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁵?

1. AChlorine
2. BArgon
3. CFluorine
4. DSulfur