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
dlinn [17]
3 years ago
15

A scientist investigates a new substance and finds that at 35° C, 146.2 grams will dissolve in 200.0 grams of water. Which simil

ar experiment could be used to support the scientist’s results?
Chemistry
1 answer:
Nimfa-mama [501]3 years ago
5 0
The scientist's results is that at a temperature of 35<span>°C, the solubility of the substance in water is 146.2 grams in 200 grams of water. There isn't really a different method to determine the solubility of a substance in water. Another procedure could be that a lesser amount of the substance is used and the water required to dissolve it is determined. The solubility of the substance based on the two procedures can then be compared.</span>
You might be interested in
Open the Balancing Chemical Equations interactive and select Introduction mode. Then choose Separate Water. Adjust the coefficie
aleksklad [387]
<h2>H_2O  + H_2 + O_2</h2>

Explanation:

1. Water decomposition

  • Decomposition reactions are represented by-

       The general equation: AB → A + B.

  • Various methods used in the decomposition of water are -
  1. Electrolysis
  2. Photoelectrochemical water splitting
  3. Thermal decomposition of water
  4. Photocatalytic water splitting
  • Water decomposition is the chemical reaction in which water is broken down giving oxygen and hydrogen.
  • The chemical equation will be -

        H_2O  + H_2 + O_2

Hence, balancing the equation we need to add a coefficient of 2 in front of H_2O on right-hand-side of the equation and  2 in front of H_2 on left-hand-side of the equation.

     ∴The balanced equation is -

       2 H_2O → 2 H_2 + O_2

2. Formation of ammonia

  • The formation of ammonia is by reacting nitrogen gas and hydrogen gas.

      N_2 + H → NH_3

Hence, for balancing equation we need to add a coefficient of 3 in front of hydrogen and 2 in front of ammonia.

   ∴The balanced chemical equation for the formation of ammonia gas is as  follows -

     N_2+3H→ 2NH_3.

  • When 6 moles of N_2 react with 6 moles ofH_2 4 moles of ammonia are produced.

5 0
3 years ago
Identifying Processes of the Carbon Cycle
Mademuasel [1]

Answer:

They break down the plants and animals they eat.

Explanation:

Consumers are the organisms which feed on plants and animals for obtaining energy. The carbon which is present in plant body in the form of glucose which is made in the process of photosynthesis. When these plants are eaten by consumers, the carbon which present in plants are transferred into the animal's body. This carbon is removed from the body of consumer in the process of cellular respiration and again goes to the atmosphere.

4 0
3 years ago
How many grams of C12 can be prepared from the reaction of 16.0 g of MnO2 and 30.0 g of HCl according to the following chemical
kogti [31]

Answer:

Mass of Cl₂ produced 12.78 g

Explanation:

Given data:

Mass of MnO₂ = 16 g

Mass of HCl = 30.0 g

Mass of Cl₂ produced = ?

Solution:

Chemical equation:

MnO₂ + 4HCl        →        MnCl₂ + Cl₂ + 2H₂O

Number of moles of MnO₂:

Number of moles = mass / molar mass

Number of moles =  16 g/ 87 g/mol

Number of moles = 0.18 mol

Number of moles of HCl:

Number of moles = mass / molar mass

Number of moles =  30 g/ 36.46 g/mol

Number of moles = 0.82 mol

Now we will compare the moles of Cl₂  with MnO₂ and HCl.

                    MnO₂               :                Cl₂

                        1                   :                   1

                       0.18               :                0.18

                    HCl                  :                   Cl₂  

                       4                    :                     1

                      0.82               :                 1/4×0.82 = 0.205 mol

The number of moles of Cl₂ formed by HCl are less it will limiting reactant.

Mass of Cl₂ formed:

Mass = number of moles × molar mass

Mass = 0.18 mol × 71 g/mol

Mass = 12.78 g

8 0
3 years ago
A brick has dimensions of 15 cm by 6.0 CM by 12 CM what is the volume of the brick in cubic meters
VLD [36.1K]

 The  volume   of  the brick  in cubic   meters  is 0.00108 m³


 <u><em>calculation</em></u>

<u><em> </em></u> volume of a brick  =length  x  width   x  height

-length = 15 cm

width = 6.0 cm

height = 12 cm

volume is therefore= 15 cm x 6.0 cm   x 12 cm =1080 cm³

convert  1080 cm³ into m³


that  is  1 cm³  =  1  x 10^-6m³

        1080  cm³ = ? m³

by cross multiplication

=[ (1080 cm³  x 1 x10^-6 m³)  /  1 cm³]  =  0.00108 m³

7 0
3 years ago
Which list includes three types of chemical reactions?
irina1246 [14]
I think the correct answer from the choices listed above is option B. The list which includes three type of chemical reactions would be decomposition, single replacement, and double replacement. These are the most basic reactions in chemistry and are the basis for other types of reactions.
6 0
3 years ago
Other questions:
  • Which expression is equal to the number of milliliters(mL)in 12.5 liters(L)?
    7·2 answers
  • The size (radius) of an oxygen molecule is about 2.0 ×10−10m. Make a rough estimate of the pressure at which the finite volume o
    15·1 answer
  • If the oh is 6.46(10^-9)M what is the pOH
    14·1 answer
  • Which of the following is NOT an effect of a solar flare? A. Magnetic storms B. Eruptions of charged particles C. The energy cre
    12·2 answers
  • How many valence electrons does an atom of al possess?
    8·1 answer
  • 2) A solution consists of 0.50 mole of CaCl2 dissolved i
    13·2 answers
  • 1.
    15·1 answer
  • Please help mee!!!! ​
    8·1 answer
  • Subject: science <br><br>what is radiation?​
    14·1 answer
  • What is the Mr of a substance where 1 mole has a mass of 11 g?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!