1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
liraira [26]
3 years ago
9

Which of the following is a mixture

Chemistry
2 answers:
pshichka [43]3 years ago
5 0
Much of the gold that is mined is actually from " gold ore " rather than actual gold specimens.
The ore is often brown, iron stained rock or massive white quartz, and usually contains only minute traces of gold. To extract the gold, the ore is crushed, then the gold is separated from the ore by various methods.

So your answer is. "Gold Ore" is a mixture.

I hope this helps.
IgorLugansk [536]3 years ago
4 0
Gold Ore is a mixture.
You might be interested in
Each particular chemical reaction cannot be expected to occur at identical rates.
givi [52]
Each particular chemical reaction cannot be expected to occur at identical rates.

True. Not all chemical reactions happen at the same rate, depending on the catalyst. 
4 0
3 years ago
Please show all of your work! :)
Paladinen [302]

Answer:

A

Explanation:

To answer this, we need to use Gay-Lussac's law, which states that:

\frac{P_1}{T_1}= \frac{P_2}{T_2} , where P is pressure and T is temperature

The initial pressure we're given is 4.5 atm (so P1 = 4.5) and the temperature is 45.0°C; however, we need to change Celsius to Kelvins, so add 273 to 45.0: 45.0 + 273 = 318 K (so T1 = 318).

The final pressure is what we want to find, but we do know the final temperature is 3.1°C. Converting this to Kelvins, we get: 3.1 + 273 = 276.1 K, which means T2 = 276.1.

Plug these values in:

\frac{P_1}{T_1}= \frac{P_2}{T_2}

\frac{4.5}{318}= \frac{P_2}{276.1}

Multiply both sides by 276.1:

P_2 ≈ 3.9 atm

The answer is thus A.

3 0
3 years ago
a car is traveling at a speed of 55 mph the speed increased to 75 mph if the time needed to hange its speed is 4 seconds whats t
Savatey [412]

v = 75 mph = 33.52 m/s

u = 55 mph = 24.58 m/s

t = 4 sec

acceleration = v-u/t

= 33.52-24.58/4

= 8.94/4

= 2.235 m/s

6 0
3 years ago
Which of these figures probably shows a sugar solution containing a small amount of sugar dissolved in water
Vesnalui [34]

Answer:

The correct answer is Sugar has a greater solubility than sand.

Sugar will easily dissolve in water because it has a lower density than sand, therefore it has a greater solubility.

8 0
3 years ago
Read 2 more answers
There are four states of matter, solid, liquid, gas and plasma. In order for matter to change between the different states it mu
ICE Princess25 [194]

Answer:

solid liquid and gas

Explanation:

3 0
2 years ago
Other questions:
  • Need help !!!!! Stuck asap
    7·1 answer
  • Fe(s) + CuSO4(aq) <===> Cu(s) + FeSO4(aq)
    10·1 answer
  • How many joules in total would be required to boil 11.8 g of water if I begin heating it at a temperature of 65.5 C ? ( two step
    8·1 answer
  • A fusion reaction takes place between carbon and another element. Neutrons are released, and a different element is formed. The
    9·2 answers
  • Rank each of the following compounds in decreasing order of reactivity towards Friedel-Crafts alkylation. Most reactive = 1; if
    5·1 answer
  • Which of the following combinations led to a precipitation reaction?
    11·1 answer
  • A sample of 25mls of HCL was mixed with 25mls of KOH of the same concentration in a calorimeter. As a result the temperature ros
    12·1 answer
  • When does a substance have a definite shape?
    12·1 answer
  • PLEASEE HELP ME! PLS PLS I NEED IT NOW PLS!
    5·1 answer
  • El compuesto del cianuro
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!