All categories

2 years ago

Atom is anything that has mass and occupies space. True or false

Chemistry

1 answer:

rosijanka [135]2 years ago

4 0

Answer:

False.

Explanation:

Matter is anything that has mass and occupies space, not atoms.

You might be interested in

What volume would a 23.8 g sample of sulfur dioxide take up if it were stored at STP7

IceJOKER [234]

Answer:

Explanation:

4 0

2 years ago

Determine the number of moles of iodine that reacts with 50g of aluminum

frozen [14]

Answer: The correct answer is option B i.e., 2.78 mol

Explanation:

Aluminium reacts with iodine to form Aluminium iodide

$2Al(s)+3I_{2}(s) \to Al_{2}I_{6}(s)$

From the equation, it is clear that 3 moles of iodine reacts with 2 moles of Aluminium to form Aluminium iodide

We know $$No.\,of\,moles=\frac{weight}{molecular\,weight} \\$

For 2 moles of Aluminium, $2=\frac{weight}{27}$\\ $weight=2 \times 27=54g$

3 moles of Iodine reacts with 54 g of Aluminium

? moles of iodine react with 50 g of Aluminium

$=\frac{3 \times 50}{54} =2.78 mol$

8 0

3 years ago

Label the parts of the respiratory system.

Evgesh-ka [11]

Answer:

1. Nose

2. Mouth

3. Larynx

4. Lung

5. RIght Bronchi

6. Diaphragm

7. Pharynx

8. Trachea

9. Left Bronchi

10. Bronchioles

11. Avoli

Explanation:

8 0

2 years ago

How many moles are in 715.11 grams of Ca(C2H302)2?

nikdorinn [45]

Answer:

4.52 mol

Explanation:

We do grams/Molar Mass to find the number of moles. The grams are given but the molar mass, you have to add all masses of the elements up by refering to a periodic table, and you should get that the compound has a mass of 158.168. Do 715.11 dived by that and you get the answer above.

3 0

2 years ago

What is the relationship between Ka and Kb with Kw?

lina2011 [118]

The correct answer is ...... The product of Ka and Kb equals the auto-dissociation constant for water. I know its right for sure!

3 0

2 years ago

Read 2 more answers