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
Gnesinka [82]
4 years ago
8

19) Which if the following is a heterogeneous mixture? a. Air b. Steel d. Soil

Chemistry
2 answers:
Nuetrik [128]4 years ago
8 0
D. Soil, because it combines from all different type, size,... other things in the Earth.

Air and Steel are homogeneous.
NikAS [45]4 years ago
6 0
A. air is a heterogeneous mixtu6
You might be interested in
How many moles of carbon dioxide (CO2) are in a 22 gram sample?
Anvisha [2.4K]

Answer:

0.5 mole

Explanation:

C=12u

O=16u

1 mole carbon dioxide=44 grams

so 22grams = 0.5 mole

6 0
3 years ago
Why a finely powdered sample should be used in a melting point measurement?
lapo4ka [179]

because it a essential for good heat transfer

6 0
3 years ago
Balance each reaction and write its reaction quotient, Qc:(b) POCl₃(g) ⇄ PCl₃(g) + O₂(g)
Komok [63]

When we balance the given equation

      POCl₃(g) ⇄ PCl₃(g) + O₂(g)

We will get

      2POCl₃(g) ⇄ 2PCl₃(g) + O₂(g)

Solution:

Balancing the given equation

      POCl₃(g) ⇄ PCl₃(g) + O₂(g)

Balancing the number of O

      2POCl₃(g) ⇄ PCl₃(g) + O₂(g)

Balancing the number of P and Cl

      2POCl₃(g) ⇄ 2PCl₃(g) + O₂(g)

We get the balanced equation

      2POCl₃(g) ⇄ 2PCl₃(g) + O₂(g)

The reaction quotient will be

     Qc = [product] / [reactant]

     Qc ​= [PCl₃(g) + O₂(g)] / [POCl₃(g) ]

To learn more click the given link

brainly.com/question/26227625

#SPJ4

4 0
2 years ago
Phosphorus-32 has a half-life of 14.0 days. Starting with 6.00 g of 32P, how many grams will remain after 42.0 days ?
aleksandrvk [35]
6g...........3g..........1,5g........0,75g
0d..........14d.........28d.........42d

After 42 days 0,75g of Phoshorus-32 will remain.
4 0
3 years ago
Read 2 more answers
4. Why is radiocarbon measurement useless when trying to measure things that died
julsineya [31]

Answer:

Radiocarbon measurement or radiocarbon dating is a method that is used to measure the age of the carbon-based material in living organisms.

Radiocarbon dating is able to estimate age of fossils that are younger than 50,000 years and unable to measure things that died longer than 200,000 years ago because fossils that are too old do not contain carbon or carbon get vanished from too old fossils of organisms. Some of the fossils also get contaminated due to environmental conditions and during teh collection or preservation process.

Thus,  radiocarbon measurement is useless when trying to measure most rocks older than 50,000 years.

4 0
3 years ago
Other questions:
  • Earthquakes result from the build-up and pressure. True or false?
    7·1 answer
  • Natural remedies are usually more effective and safer because they have thoroughly tested .
    13·1 answer
  • Does the mass of water increase or decrease when it changes to ice
    14·2 answers
  • How many moles of NaCl are needed to make 10.0L of a 5 M solution of<br> Salt water?*
    8·1 answer
  • Which is the correct Lewis dot structure of NH2?
    5·1 answer
  • Manganese dioxide (MnO2(s), Hf = –520.0 kJ) reacts with aluminum to form aluminum oxide (AI2O3(s), Hf = –1699.8 kJ/mol) and mang
    11·1 answer
  • What the 4 main parts to a flower<br> science i cant find it in the supject
    14·2 answers
  • Air is made of nitrogen, carbon dioxide, and small amounts of other gases. What is the pressure of O₂, total is 1 atm if PN₂ = 5
    11·1 answer
  • A metal is found that has a mass of 27g and will displace 6mL of water. Calculate its density and identify the metal.
    13·1 answer
  • Determine which of the following data points is an outlier, on the graph below.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!