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
Nitella [24]
3 years ago
9

Which of the following characteristics must be present for a substance to be called a mineral?

Chemistry
2 answers:
atroni [7]3 years ago
7 0
Answer is A have a crystal structure. 
Elis [28]3 years ago
7 0

Answer:

A. have a crystal structure

Explanation:

A mineral has a definite chemical structure

It has to be a solid

A mineral is inorganic

You might be interested in
Which will get spoiled faster: plum in water or plum in the open?
lara31 [8.8K]

Answer:

It depends

(plum will spoil more quickly at warm temperatures)

Explanation:

3 0
2 years ago
Nuclear energy is currently used in which three kinds of vehicles?
qaws [65]

Nuclear power plants produce little to no greenhouse gas.

Nuclear power plants produce a large amount of energy for a small mass of fuel.

8 0
3 years ago
Read 2 more answers
The weight of the body in the air is .... the weight of the submerged body
stira [4]

Answer:

the correct answer is option 'b': More than

Explanation:

The 2 situations are represented in the attached figures below

When an object is placed in air it is acted upon by force of gravity of earth which is measured as weight of the object.

While as when any object is submerged partially or completely in any fluid the fluid exerts a force in upward direction and this force is known as force of buoyancy and it's magnitude is given by Archimedes law as equal to the weight of the fluid that the body displaces, hence the effective force in the downward direction direction thus the apparent weight of the object in water decreases.

4 0
3 years ago
All solutions<br>are mixtures; but<br>all mixtures are<br>not solutions.<br>why?​
aleksklad [387]

All solutions are mixtures of two or more substances, but unless the mixture has a homogeneous distribution of solutes in the solvent, then the mixture is not a solution. Therefore, all mixtures are not solutions.

5 0
2 years ago
When 100 mL of 0.200 M NaCl(aq) and 100 mL of 0.200 M AgNO3(aq), both at 21.9 °C, are mixed in a coffee cup calorimeter, the tem
masya89 [10]

Answer:

There is 1.3 kJ heat produced(released)

Explanation:

<u>Step 1:</u> Data given

Volume of a 0.200 M Nacl solution = 100 mL = 0.1 L

Volume of a 0.200 M AgNO3 solution = 100 mL = 0.1 L

Initial temperature = 21.9 °C

Final temperature = 23.5 °C

Solid AgCl will be formed

<u>Step 2</u>: The balanced equation:

AgNO3(aq) + NaCl(aq) → AgCl(s) + NaNO3(aq)

AgCl(s) + NaNO3(aq) → Na+(aq) + NO3-(aq) + AgCl(s)

<u>Step 3:</u> Define the formula

Pressure is constant.  → the heat evolved from the reaction is equivalent to the enthalpy of reaction.  

Q=m*c*ΔT

⇒ Q = the heat transfer (in joule)

⇒ m =the mass (in grams)

⇒ c= the heat capacity (J/g°C)

⇒ ΔT = Change in temperature = T2- T1

Step 4: Calculate heat

Let's vonsider the density the same as the density of water (1g/mL)

Mass = volume * density

Mass = 200 mL * 1g/mL

Mass = 200 grams

Q= m*c*ΔT

⇒ m = 200 grams

⇒ c = the heat capacity (let's consider the heat capacity of water) = 4.184 J/g°C

⇒ ΔT = 23.5 -21.9 = 1.6°C

Q = 200 * 4.184 * 1.6 = 1338 .9 J = 1.3 kJ

There is 1.3 kJ heat produced(released)

Therefore, we assumed no heat is absorbed by the calorimeter, no heat is exchanged between the  calorimeter and its surroundings, and the specific heat and mass of the solution are the same as those for  water (1g/mL and 4.184 J/g°C)

7 0
3 years ago
Other questions:
  • Which of the following is a benefit of having a standard measurement system that can be used by scientists worldwide?
    5·1 answer
  • Why does food wrapped in aluminum foil keep warm for a long time? A) Aluminum foil is an insulator and prevents heat loss by con
    15·2 answers
  • What is the diagram of 2CO2
    12·1 answer
  • A chemist prepares a solution of iron(III) bromide by measuring out of iron(III) bromide into a volumetric flask and filling the
    12·1 answer
  • When the ocean absorbs co2 the ph of the ocean water drops. what's the effect of this process answers?
    13·1 answer
  • Which of the following correctly identifies the number of each element involved in the chemical formulas
    8·1 answer
  • How much aluminum oxide are produced when 46.5g of Al react with 165.37g of MnO?
    11·1 answer
  • (Help would be greatly appreciated) What is the molarity of a solution which contains 22.41 grams of NaCl in 50.0 mL of solution
    10·1 answer
  • Which of the following is NOT an advantage of a wireless network? convenience reliability security speed
    12·1 answer
  • Iron reacts with Oxygen gas to form Iron II Oxide according to the reaction
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!