Робочий аркуш «Хімія для вступних іспитів на медсестринство» з відповідями

How many moles of oxygen atoms are in 1 mole of carbon dioxide, CO₂?

1. A0,5
2. B1
3. C3
4. D2

According to the kinetic molecular theory, how do gas particles move?

1. AAlways in a single direction, set by the pull of gravity
2. BOnly when heated, and then in neat lines between the walls
3. CSlowly in fixed positions
4. DConstantly, randomly and in straight lines between collisions

What is the SI unit of pressure?

1. AJoule (J)
2. BNewton (N)
3. CPascal (Pa)
4. DLitre (L)

How does ionisation energy (the energy needed to remove an outer electron) generally change from left to right across a period?

1. AIt stays the same
2. BIt increases
3. CIt decreases
4. DIt first falls, then rises sharply

Which gas forms when hydrochloric acid reacts with calcium carbonate?

1. AHydrogen
2. BCarbon dioxide
3. COxygen
4. DChlorine

At 20 °C, about 36 g of NaCl dissolves in 100 g of water. If 50 g of NaCl is stirred into 100 g of water at 20 °C, what happens?

1. ANone of the salt dissolves
2. BAbout 36 g dissolves and about 14 g stays undissolved
3. CAbout 14 g dissolves and about 36 g stays undissolved
4. DAll 50 g dissolves

5,85 g of NaCl (molar mass 58,5 g/mol) is dissolved to make 500 mL of solution. What is the molarity?

1. A0,05 M
2. B2 M
3. C0,2 M
4. D0,1 M

Скільки атомів в одній молекулі глюкози C₆H₁₂O₆?

1. A72
2. B18
3. C24
4. D3