Shopping in a supermarket has some great advantages. Firstly, it is good for people who like to see and touch things before buying. Before buying new clothes, you can try them on to make sure they fit well. Second, everyone can know the product's expiration date. If the product is expired, they can return the product to the supermarket. Don't worry about bargain, they are fixed price items so you can never do that. Finally, going to the supermarket is still a great choice.

2Fr + 2H₂O --> 2FrOH + H₂↑

Tuy nhiên Fr không có đồng vị bền (cực hiếm) nhưng nó vẫn là kim loại kiềm !

5607 dm² = 56 m² 7 dm²

\(\dfrac{4}{5}\) m = 8 dm

\(\dfrac{2}{5}\)m = 4 dm

ƯCLN(102, 45) = 3

\(\dfrac{102}{45}=\dfrac{102:3}{45:3}=\dfrac{34}{15}\)

95+2+98+5

=(95 + 5) + (2 + 98)

= 100 + 100

= 200

97 + 4 + 96 + 3

= (97 + 3) + (4 + 96)

= 100 + 100

=200

Số kg cam là: 516 * 30 = 15 480 (kg cam)

1. While I was sleeping, I heard a loud noise from bathroom.

2. We were shocking when our classmate my get ten marks in math.

3. Before my father leaves for work, he cooked breakfast for my family.

4. After I finish my homework, I will watch Animal Planet channel.

1. While I was sleeping, I heard a loud noise from bathroom.

2. We were shocked when we heard that a tornado would hit our town.

3. Before my father leaves for work, he cooked breakfast for my family.

4. After I finish my homework, I will watch Animal Planet channel.

1. She was surprised when she found a golden coin in the garden.

2. I will go shopping right after as soon as I find my wallet.

3. Before he made a quick phone call to a client, he left the office.

4. He took a rest after he mowed the lawn.