3 years ago

The hydrogens and oxygen of a water molecule are held together by ______ bonds.

Chemistry

2 answers:

umka2103 [35]3 years ago

6 0

The hydrogens and oxygen of a water molecule are held together by covalent bond

german3 years ago

3 0

Covalent bonds, as they are both non metals

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3 years ago

A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 8.10kg of water at 33.9 degree

lions [1.4K]

Answer:

The new temperature of the water bath 32.0°C.

Explanation:

Mass of water in water bath ,m= 8.10 kg = 8100 g ( 1kg = 1000g)

Initial temperature of the water = $T_1=33.9^oC=33.9+273K=306.9 K$

Final temperature of the water = $T_2$

Specific heat capacity of water under these conditions = c = 4.18 J/gK

Amount of energy lost by water = -Q = -69.0 kJ = -69.0 × 1000 J

( 1kJ=1000 J)

$Q=m\times c\times \Delta T=m\times c\times (T_2-T_1)$

$-69.0\times 1000 J=8100 g\times 4.18 J/g K\times (T_2-306.9 K)$

$-69,000.0 J=8100 g\times 4.18 J/g K\times (T_2-306.9 K)$

$T_2=304.86 K=304.86 -273^oC=31.86^oC\approx 32.0^oC$

The new temperature of the water bath 32.0°C.

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3 years ago

Calculate the mass of magnesium oxide formed when 3.0 grams of magnesium reacts with excess oxygen.

BlackZzzverrR [31]

Mg+O2=MgO
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3 g. = x
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2 years ago

Which of these is an example of heat transferred by radiation?

timofeeve [1]

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Fiesta28 [93]

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Explanation:

Hope this helps! Mark me Brainliest pls :)

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2 years ago