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Arlecino [84]
2 years ago
14

Of the options below, which is generally associated with the lowest boiling temperatures when it is the only type of bond presen

t in a material? a. metallic b. covalent c. London dispersion forces d. ionic
Chemistry
1 answer:
Olin [163]2 years ago
5 0

Answer:

Explanation:

Of all the given forces , london dispersion force is the weakest inter-molecular force which is temporary in nature . This force results due to two adjecent atoms  or molecules becoming dipoles temporarily. This force exists among the atoms of inert gases.

Atoms having this force have lowest boiling point.

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Is a computer screen energy transfer or transformation?
yarga [219]
A computer screen is energy transfer
4 0
3 years ago
A CaCl2 solution is given to increase blood levels of calcium. If a patient receives 6.1 mL of a 12 % (m/v) CaCl2 solution, how
Yuliya22 [10]

Mass of CaCl₂ = 0.732 g

<h3>Further explanation</h3>

The concentration of a substance can be expressed in several quantities such as moles, percent (%) weight / volume,), molarity, molality, parts per million (ppm) or mole fraction. The concentration shows the amount of solute in a unit of the amount of solvent.

\tt \%(m/v)\rightarrow 12\%=\dfrac{mass~CaCl_2}{volume~of~solution}\times 100\%\\\\mass~CaCl_2=12\%\times 6.1\div 100\%\\\\mass~CaCl_2=0.732~g

5 0
3 years ago
Sodium metal and water react to create sodium hydrogen and hydrogen gas through the unbalanced equation.
Maurinko [17]

Answer:

Theoretical yield = 2.5 g

Explanation:

Given data:

Mass of sodium = 79.7 g

Mass of water = 45.3 g

Theoretical yield of hydrogen gas = ?

Solution:

Chemical equation:

2Na + 2H₂O → 2NaOH + H₂

Number of moles of sodium:

Number of moles = mass/ molar mass

Number of moles = 79.7 g / 23 g/mol

Number of moles = 3.5 mol

Number of moles of water:

Number of moles = mass/ molar mass

Number of moles = 45.3 g / 18g/mol

Number of moles = 2.5 mol

Now we will compare the moles of hydrogen gas with water and sodium.

                        H₂O           :             H₂

                           2             :              1

                          2.5           :            1/2×2.5 =1.25 mol

                     

                           Na           :              H₂

                             2            :               1

                           3.5           :             1/2×3.5 =1.75 mol

water will be limiting reactant.

Theoretical yield:

Mass = number of moles × molar mass

Mass =  1.25 mol  × 2 g/mol

Mass = 2.5 g

8 0
2 years ago
Magnesium hydroxide reacts with hydrogen chloride, a double-displacement reaction occurs and produces magnesium chloride and wat
Natalija [7]

Explanation:

magnesium Hydroxide + Hydrochloric react together and give us magnesium chloride + water

5 0
2 years ago
Where should the neutrons be added to this atomic model?
Lera25 [3.4K]

Answer:

with the proton inside the nucleus

4 0
3 years ago
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