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
Yuki888 [10]
3 years ago
10

Please help me this science

Chemistry
1 answer:
Yuliya22 [10]3 years ago
8 0
Think of dirt and rocks . Common as they are they do mix and they are great examples of a outside mixture. This could give u the perfect idea or picture of what u need.
You might be interested in
A positively charged ion will bond with...
irina [24]

Answer:

A

Explanation:

because if you bond postitive and positive they would repell

7 0
3 years ago
Concentration required to begin precipitate pbcl2 for pbcl2 ksp=1. 17×10−5
Ne4ueva [31]

The concentration required to begin to precipitate PbCl2 for PbCl2 is 0.0216 M.

<h3>What is molarity?</h3>

Molarity is the measure of the concentration of any solute in per unit volume of the solution.

The reaction is \rm Pb^2^+(aq) + 2Cl^-(aq) \rightarrow PbCl_2(s).

The molarity of lead is 0.025 M

The ksp is given 17×10⁻⁵

Now, calculating the concentration

[Pb^2^+] = 0.025 M.\\Ksp = 1.17 \times 10^-^5\\Ksp = [Pb^2^+] \times  [Cl^-]^2\\[Cl^-] =  \dfrac{\sqrt{ Ksp}}{[Pb^2^+]} \\\\[Cl^-] =  \dfrac{\sqrt{ 0.0000117}}{0.025}  \\[Cl^-] = 2.16 \times 10^-^2M.

Thus, the concentration required to begin to precipitate PbCl2 for PbCl2 is 0.0216 M.

Learn more about molarity

brainly.com/question/10725862

#SPJ4

5 0
2 years ago
____________ rays show areas where large quantities of energy are released.
sladkih [1.3K]

Answer:

Gamma

Explanation:

3 0
2 years ago
37.2 liters of a gas has a pressure of 362.43 kPa at 46.5 °C. If the pressure increases to
Nataliya [291]

Answer:

Option A. 25.7 L.

Explanation:

Step 1:

Data obtained from the question. This include the following:

Initial volume (V1) = 37.2 L

Initial pressure (P1) = 362.43 kPa

Initial temperature (T1) = 46.5 °C

Final pressure (P2) = 693.9 kPa

Final temperature (T2) = 149.2 °C

Final volume (V2) =.?

Step 2:

Conversion of celsius temperature to Kelvin temperature.

This can be achieved as shown below:

Temperature (K) = Temperature (°C) + 273

T (K) = T (°C) + 273

Initial temperature (T1) = 46.5 °C

Initial temperature (T1) = 46.5 °C + 273 = 319.5 K.

Final temperature (T2) = 149.2 °C

Final temperature (T2) = 149.2 °C + 273 = 422.2 K.

Step 3:

Determination of the new volume.

This can be obtained by using the general gas equation as shown below:

Initial volume (V1) = 37.2 L

Initial pressure (P1) = 362.43 kPa

Initial temperature (T1) = 319.5 K

Final pressure (P2) = 693.9 kPa

Final temperature (T2) = 422.2 K

Final volume (V2) =.?

P1V1/T1 = P2V2/T2

362.43×37.2/319.5 = 693.9 × V2/422.2

Cross multiply

319.5×693.9×V2 = 362.43×37.2×422.2

Divide both side by 319.5 × 693.9

V2 = (362.43×37.2×422.2)/(319.5×693.9)

V2 = 25.7 L

Therefore, the new volume is 25.7 L.

8 0
4 years ago
Why does iron have no oxidation state corresponds to loss of all it's valence electrons?
olganol [36]

Answer:

When an element loses an electron, its oxidation number increases.

Explanation:

The oxidation number of an element indicates the hypothetical charge of an atom in a compound. It is hypothetical because, in the context of a compound, the elements may not necessarily be ionic. When the number of electrons associated with an atom changes, its oxidation number also changes. When an element loses an electron, its oxidation number increases.

7 0
4 years ago
Other questions:
  • Which are inorganic substances? Check all that apply.
    7·1 answer
  • -Which of the following best explains how human activities can directly contribute to landslides?
    6·1 answer
  • Consider three 10-g samples of water: one as ice, one as liquid, and one as vapor. how do the volumes of these three samples com
    11·1 answer
  • This excerpt from William Shakespeare’s The Tempest is an example of ___________.
    12·1 answer
  • What does the periodic table have in common with a calendar?
    10·1 answer
  • Why does Polaris appear to be so much smaller than the Sun to the human eye?
    9·1 answer
  • What is the heat of vaporization of nitrous oxide in kJ/mol?
    15·1 answer
  • The following substances dissolve when added to water. Classify the substances according to the strongest solute-solvent interac
    7·1 answer
  • I need help like asap giving 100 points like for real
    11·2 answers
  • Chemistry skeletal structure
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!