All categories

3 years ago

Rocks are classified according to their composition and color. true or false

Chemistry

2 answers:

pshichka [43]3 years ago

4 0

Those are some of the ways
So the statement will be true

il63 [147K]3 years ago

3 0

True :)

Hope I helped :)

You might be interested in

In a coffee-cup calorimeter, 100.0 g of H2O and 100.0 mL of 1M HCl are mixed. The HCl had an initial temperature of 44.6 C and t

Hatshy [7]

Answer:

Exothermic reaction for the HCl, endothermic reaction for the water

$2803.28\ \text{J}$

Explanation:

Heat was lost by HCl as its temperature lowered, so it was an exothermic reaction for the HCL.

Heat was gained by water as its temperature increased, so it was an endothermic reaction for the water.

m = Mass of water = 100 g

c = Specific heat of water = $4184\ \text{J/kg}^{\circ}\text{C}$

$\Delta T$ = Change in temperature of water = $(31.3-24.6)^{\circ}\text{C}$

Heat is given by

$Q=mc\Delta T\\ =0.1\times 4184\times (31.3-24.6)\\ =2803.28\ \text{J}$

Heat gained by water is $2803.28\ \text{J}$ .

5 0

2 years ago

Aluminum can react with oxygen gas to produce aluminum oxide (Al2O3). What type of reaction is this?

Pachacha [2.7K]

It's Synthesis, single replacement is incorrect.

6 0

3 years ago

If the map shows the average high temperature in July for two cities in Texas. like Del Rio=36°c

Sedbober [7]

Answer:

Explanation:

Ocean breezes keep coastal galveston cooler than Del Rio, which is inland exposed to southerly winds.

4 0

3 years ago

What volume of 12M HCI is needed to prepare 250<br> of 0.20M HCI?

Alchen [17]

Answer: 4.2

Explanation:

$M_{A}V_{A}=M_{B}V_{B}\\(12)V_{A}=(250)(0.20)\\V_{A}=\frac{(250)(0.20)}{12}=\boxed{4.2}$

6 0

1 year ago

What happens when chlorine from<br> CFCs mixes with ozone?

Svetach [21]

Answer:

Because they are extremely stable molecules, CFCs do not react easily with other chemicals in the lower atmosphere. ... Free chlorine atoms then react with ozone molecules, taking one oxygen atom to form chlorine monoxide and leaving an ordinary oxygen molecule.

Explanation:

5 0

3 years ago