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3 years ago

Van der Waals forces can best be described as the attractive or repulsive forces that are formed

2 answers:

5 0

Vander Waals forces can best be described as the attractive or repulsive forces that are formed during dipole-dipole interactions between molecules.

Vander Waals forces arises from interaction between uncharged atoms or molecules and these are formed during dipole-dipole interactions between molecules. Vander waal forces are weak forces that vanishes when molecules moves apart.

dem82 [27]3 years ago

3 0

Correct answer: by a random, short-lived redistribution of electrons.

van der Waal's forces are the weak intermolecular forces of attraction or repulsions that are seen in all molecules, when they come close to each other. These forces of attraction or repulsion are due to the momentary charges that develop between the electron clouds of one atom and the nuclei of the other atom. Therefore, the van der Waal's forces are due to the instantaneous dipoles that are produced between two atoms close to each other, due to the redistribution of electron clouds.

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___ and ___ are located in the nucleus of the atom while ____ exist in orbitals in the empty space outside of the nucleus

bogdanovich [222]

Answer:

Neutrons and Protons, Electrons

Explanation:

Neutrons and protons are in the inside as electrons orbit around it in a circular pattern

3 0

3 years ago

Will give branliest

fomenos

60 Grams are produced due to the fact that it may not produce more due to the certain capacity that varies on the size of the cube.

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2 years ago

Which of the following describes a characteristic of water that helps it in dissolving a wide range of chemicals and biomolecule

Papessa [141]

<h2>Hey there!</h2>

<h3>The correct option is (A) It has a partial negative charge on oxygen and a partial positive charge on hydrogen.</h3>

<h3>☆ Explanation:</h3>

¤ As water has the ability to form hydrogen bonds which makes it an excellent solvent.

¤ For this ability of water it can dissolve many different kinds of molecules.

<h2>Hope it helps </h2>

8 0

2 years ago

Preparation of ammonia gas<br>

Makovka662 [10]

Answer:

Ammonia is easily made in the laboratory by heating an ammonium salt, such as ammonium chloride NH4Cl with a strong alkali, such as sodium hydroxide or calcium hydroxide.

The gas may also be made by warming concentrated ammonium hydroxide.

Explanation:

2NH4Cl + Ca(OH)2 → CaCl2 + 2H2O + 2NH3(g)

7 0

2 years ago

The reaction for photosynthesis producing glucose sugar and oxygen gas is:

Anvisha [2.4K]

<u><em>1.5 grams of glucose is produced from 2.20 g of CO₂.</em></u>

To find the mass of glucose produced, first you must know the balanced reaction. For this, the Law of Conservation of Matter is followed.

The law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

So, in this case, the balanced reaction is:

6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂

By stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the amounts of moles of each reactant and product participate in the reaction:

CO₂: 6 moles
H₂O: 6 moles
C₆H₁₂O₆: 1 mole
O₂: 6 moles

So, you know that 2.20 g of CO₂ react, whose molar weight is 44.01 g/mole. By definition of molar mass, 1 mole of CO₂ has 44.01 g. So, the number of moles that 2.20 grams of the compound represent is calculated as:

$moles of CO_{2} =2.20 grams*\frac{1 mole}{44.01 grams}$

moles of CO₂= 0.05 moles

Now you must follow the following rule of three: if by stoichiometry of the reaction 6 moles of CO₂ produce 1 mole of C₆H₁₂O₆, 0.05 moles of CO₂ produce how many moles of C₆H₁₂O₆?

$moles of C_{6} H_{12} O_{6} =\frac{0.05moles of CO_{2} *1 mole of C_{6} H_{12} O_{6}}{6moles of CO_{2}}$

moles of C₆H₁₂O₆= 8.33*10⁻³

Being the molar mass of glucose 180.18 g/mole, the mass that 8.33*10⁻³ moles of the compound represent is calculated as:

$mass of glucose =8.33*10^{-3} moles*\frac{180.18 grams}{1 mole}$

<em>mass of glucose= 1.5 grams</em>

Then, <u><em>1.5 grams of glucose is produced from 2.20 g of CO₂.</em></u>

5 0

3 years ago