Within a single molecule of water, two hydrogen bonds are bonded to a single oxygen atom by_.However when there are multiple water molecules, the partial negative charge at one end of a water molecule attracted to the partial ositive charge of another water molecule forms ______.

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Answer 1

Answer:

Answer:

covalent bonding, hydrogen bonding

Explanation:

The molecular formula of water is $H_2O$ in which the two hydrogen atoms are connected to the oxygen atom via covalent bonds which means that the electrons are shared in the bond.

Hydrogen bonding is a special type of the dipole-dipole interaction and it occurs between hydrogen atom that is bonded to highly electronegative atom which is either fluorine, oxygen or nitrogen atom.

Partially positive end of the hydrogen atom is attracted to partially negative end of these atoms which is present in another molecule. It is strong force of attraction between the molecules.

Thus, when multiple water molecules are there, there are connected by hydrogen bonding.

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Burning fossil fuels in a low oxygen environment will most likely produceA) carbon monoxide. B) hydrogen peroxide. C) sulfuric acid. D) methane.

What mass of oxygen is required to completely react with 2 moles of ch4

Answers

The balanced reaction that describes the reaction between methane and oxygen to produce water and carbon dioxide is expressed CH4 + 2 O2 = CO2 +2H2O. Hence for 2 moles of methane used, 4 moles of oxygen are needed to react completely.

The recommended daily requirement of calcium is1,000 mg. Tap water in a Midwestern city contains approximately 150 mgCa/L. A person living in the city who drinks two liters of water in oneday would receive ________ percent of his/her RDA of calcium. A. 3
B. 7.5
C. 15
D. 30

Answers

The answer is D. 30 percent

How can we determine if energy was released or absorbed during a reaction?a) Measure the mass of the reaction at the beginning and end

b) Measure the temperature of the reaction at the beginning and end

c) Measure the volume of the reaction at the beginning and end

d) Measure the density of the reaction at the beginning and end

Answers

The answer was is b measure the temp of the reaction at the beginning and end

As air passes over a body of water, some of the carbon stored in the water is transferred to the atmosphere. This process is called _________________________________

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This process is called diffusion.

Given the balanced equation representing a reaction:2C2H6 + 7O2==>4CO2 + 6H2O

Determine the total number of moles of oxygen that react completely with 8.0 moles of C2H6.

Answers

The number of moles of O₂ will be 28 moles.

The given balanced reaction:

$2C_2H_6 + 7O_2==>4CO_2 + 6H_2O$

From the above reaction,

2 moles of C₂H₆ nd 7 moles of O₂ reacts together to produce 4 moles of CO₂ and 6 moles of H₂O.

Given:

Number of moles of C₂H₆ = 8

To find:

Number of moles of O₂=?

2 moles of C₂H₆ reacts with 7 moles of O₂.

1 mol of C₂H₆ = $(7)/(2)$ moles of O₂

8 moles of C₂H₆ = $(7)/(2) *8$ moles of O₂

Thus, number of moles of O₂ will be 28 moles.

Find more information about "Number of moles" here:

brainly.com/question/13314627

How many grams of calcium bromide are in 50.0 mL of a 0.25 M calcium bromide solution?

Answers

The mass of the compound can be calculated by the molarity. The mass of the calcium bromide in the given solution is 2.5 g.

The mass of the given compound can be calculated by the molarity formula,

$\bold {M = \frac {w}{m* v} * 1000}\n\n\bold {w = \frac {M* m* v}{ 1000}}$

Where,

M- molarity of the solution = 0.25 M

w - given mass =?

m -molar mass of Calcium bromide = 200 g/mol

v-volume in mL= 50 mL

Put the values in the formula,

$\bold {w = \frac {0.25* 200* 50}{ 1000}}\n\n\bold {w = 2.5\ g}$

Therefore, the mass of the calcium bromide in the given solution is 2.5 g.

To know more about Molarity,

brainly.com/question/12127540

$C_(m)=(n)/(V_(r))\n\nm=(m)/(M)\n\nC_(m)=(m)/(MV_(r)) \ \ \ \ \Rightarrow \ \ \ \ m=C_(m)MV_(r)}\n\nC_(m)=0.25(mol)/(L)\nM_{CaBr_(2)}=200(g)/(mol)\nV_(r)=50mL=0.05L\n\nm=0.25(mol)/(L)*200(g)/(mol)*0.05L= \emph{\textbf{2.5g}}$

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Within a single molecule of water, two hydrogen bonds are bonded to a single oxygen atom by_______.However when there are multiple water molecules, the partial negative charge at one end of a water molecule attracted to the partial ositive charge of another water molecule forms ____________.

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Within a single molecule of water, two hydrogen bonds are bonded to a single oxygen atom by_.However when there are multiple water molecules, the partial negative charge at one end of a water molecule attracted to the partial ositive charge of another water molecule forms ______.