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olga_2 [115]
3 years ago
13

. A large quantity of very dilute aqueous HCl solution is neutralized by the addition of the stoichiometric amount of a 10-mol-%

aqueous NaOH solution. Estimate the heat effect per mole of HCl neutralized if the tank is maintained at 25°C and 1(atm) and the neutralization reaction goes to completion. ∙ For NaOH(9H2O), Δ˜H = 45.26 kJ·mol−1 ∙ For NaCl, ~ limn→[infinity]˜ΔH = 3.88 kJ·mol−1
Chemistry
1 answer:
ad-work [718]3 years ago
5 0

Answer:

Make the question more clear for me

Explanation:

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Give explanations for the large drops in melting point from C to Si and from Ge to Sn.
____ [38]

As we move down the group, the metallic bond becomes more stable and the formation of forming covalent bond decreases down the group due to the large size of elements.

Covalent and metallic bonding leads to higher melting points. Due to a decrease in attractive forces from carbon to lead there is a drop in melting point.

Carbon forms large covalent molecules than silicon and hence has a higher melting point than silicon.

Similarly, Ge also forms a large number of covalent bonds and has a smaller size as compared to that of Sn. Hence melting point decreases from Ge to Sn.

The order will be C>Si>Ge>Pb>Sn.

To learn more about the covalent bond, visit: brainly.com/question/10777799

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3 0
1 year ago
What is the speed of light of an orange light with a wavelength of 600nm and a frequency of 5.00x1014?
vovangra [49]

Answer:

3 × 10^8 m/s

Explanation:

The wavelength, can be calculated by using the following formula;

λ = v/f

Where;

λ = wavelength (m)

v = velocity/speed of light (m/s)

f = frequency (Hz)

According to the provided information in this question, λ = 600nm i.e. 600 × 10^-9m, f = 5.00 x 10^14 Hz

Hence, using λ = v/f

v = λ × f

v = 600 × 10^-9 × 5.00 x 10^14

v = 6 × 10^-7 × 5.00 x 10^14

v = 30 × 10^(-7 + 14)

v = 30 × 10^ (7)

v = 3 × 10^8 m/s

3 0
2 years ago
What do nuclear reactions change in the atom?
Ganezh [65]
Nuclear reactions happen inside the nucleus,so it changes the protons and neutrons
5 0
3 years ago
Read 2 more answers
mr. Rose asked his student to draw a quadrilateral with four unequal sides. An example of this kind of quadrilateral
777dan777 [17]
Think of w shape with 4 sides the shape I know tat is Quadrilateral is a square
8 0
3 years ago
When warm air rises and cool air sinks towards earth surface. what is this known as?
iVinArrow [24]

When warm air rises and cool air sinks towards earth surface. what is this known as <u>convection currents.</u>

Explanation:

Convection currents not only occurs in the air but also in other fluids like water. In the air, they are responsible for the blowing of winds of the atmosphere . In the oceans, they are responsible for ocean currents. Convection currents also occur in the mantle and are responsible for tectonic plate movements.

Learn More:

For more on convection currents check out;

brainly.com/question/223549

brainly.com/question/11699167

#LearnWithBrainly

4 0
3 years ago
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