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Nezavi [6.7K]
3 years ago
11

Why does water have a lopsided shape and act like a chemical magnet?

Chemistry
1 answer:
leva [86]3 years ago
4 0

Answer:

See below  

Step-by-step explanation:

(a) Shape

The formula for water is H-O-H.

The central O atom has four electron pairs around it. They try to get as far from each other as possible, so they point toward the corners of a tetrahedron.

Only two of the pairs have a hydrogen atom attached, so water has a bent shape. The H-O-H bond angle is about 104°.

(b) Chemical magnet

The O atom has a greater attraction than H for the shared electrons in the O-H bonds, so the electrons spend more time near the O.

This gives the O atom a partial negative charge (pink in the diagram) and the H atoms a partial positive charge (blue).

The water molecule acts like a chemical magnet because its negative end attracts the positive ends of other molecules, while its positive ends attract the negative ends of other molecules.

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How many total carbon atoms are in the structure 2 methyl, 3, 4 diethyl decane?
makvit [3.9K]

Answer:B

15 carbon atoms

6 0
3 years ago
Which solution, solution X of pH 9.4 or solution Y of pH 7.5, is more acidic? Which solution, solution of 9.4 or solution of 7.5
zzz [600]

Answer:

Solution Y is more acidic

Explanation:

The pH value is an indicator of the concentration of hydrogen ions (H⁺) in an aqueous solution, and it is defined as:

pH= -log [H⁺]

⇒ [H^{+} ]= 10^{-pH}

Where  [H⁺] is the concentration of H⁺. A solution with a higher concentration of H⁺ is more acidic, and a solution with a lower concentration of H⁺ is less acidic or basic.

As result, <em>the lower the pH, the more the concentration of hydrogen ions ([H⁺]), and the aqueous solution is more acidic</em>.

Solution Y has a lower pH value (7.5) than solution X (9.4). So, solution Y is more acidic.

8 0
3 years ago
If the heat of combustion for a specific compound is −1160.0 kJ/mol and its molar mass is 86.47 g/mol, how many grams of this co
notsponge [240]

Answer:

40.34 g

Explanation:

First, we divide the heat to release by the heat of combustion to obtain the required moles of compound:

541.20 kJ/(1160.00 kJ/mol) = 0.4665 mol

So, we have to burn approximately 0.47 mol of the compound. We convert the moles to mass in grams by using the molar mass:

mass = molar mass x moles = 86.47 g/mol x 0.4665 mol = 40.34 g

Therefore, you must burn 40.34 grams of the compound to release 541.20 kJ of heat.

8 0
2 years ago
A element that starts with the letter c (from the periodic table)
DaniilM [7]

C- carbon

Ca- calcium

Cl- chlorine

Co- cobalt

Cu- copper

Idk how many you need or you just needed carbon. Which is C

7 0
2 years ago
A child has a toy balloon with a volume of 1.80 liters. The temperature of the balloon when it was filled was 20° C and the pres
kiruha [24]

Answer:

The new volume of the balloon is 2.422 liters.

Explanation:

Let suppose that gas inside the balloon behaves ideally. From the Equation of State for Ideal Gases, we know that pressure (P), in atmospheres, is inversely proportional to volume (V), in liters, and directly proportional to temperature (T), in Kelvin. Based on this fact, we construct the following relationship:

\frac{P_{1}\cdot V_{1}}{T_{1}} = \frac{P_{2}\cdot V_{2}}{T_{2}} (1)

Where:

P_{1}, P_{2} - Initial and final pressures, in atmospheres.

V_{1}, V_{2} - Initial and final volumes, in liters.

T_{1}, T_{2} - Initial and final temperatures, in Kelvin.

If we know that P_{1} = 1\,atm, V_{1} = 1.80\,L, T_{1} = 293.15\,K, P_{2} = 0.667\,atm, T_{2} = 263.15\,K, then the final pressure is:

V_{2} = V_{1} \cdot \left(\frac{P_{1}}{P_{2}} \right)\cdot \left(\frac{T_{2}}{T_{1}} \right)

V_{2} = 2.422\,L

The new volume of the balloon is 2.422 liters.

8 0
3 years ago
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