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docker41 [41]
3 years ago
11

8. One household remedy for bee stings is to make and apply a baking soda paste. From your data on baking soda water, what type

of substance must bee venom be if it is neutralized by
baking soda?
Chemistry
1 answer:
frutty [35]3 years ago
6 0

Answer:

A paste made of baking soda and water can help neutralize bee venom to reduce pain, itching, and swelling. Apply a thick layer of baking soda paste to the affected area. Cover the paste with a bandage. Leave on for at least 15 minutes and re-apply as needed.

Explanation:

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How much heat is required to change 56.0 g of ice (H2O) at 263 K to vapor (steam) at 400 K?
Leona [35]

Heat required = 173 kJ

<h3>Further explanation</h3>

Given

56.0 g of ice

Temperatur at 263 K(-10 C) to 400 K(127 C)

Required

Heat needed

Solution

1. raise the temperature(-10 C to 0 C)⇒c ice=2.09 J/g C

\tt Q=56\times 2.09\times (0-(-10)=1170.4~J

2. phase change (ice to water)⇒Heat of fusion water=334 J/g

\tt Q=56\times 334=18704~J

3. raise the temperature(0 C to 100 C)⇒c water= 4.18 J/g C

\tt Q=56\times 4.18\times (100-0)=23408~J

4. phase change(water to vapor)⇒heat of vaporization water=2260 J/g

\tt Q=56\times 2260=126560~J

5. raise the temperature(100 C to 127 C)⇒c vapor=2.09 J/g C

\tt Q=56\times 2.09\times (127-100)=3160.08~J

Total heat :

1170.4+18704+23408+126560+3160.08=173,002.48 J=173 kJ

7 0
3 years ago
In a body of water, the surface tension caused by the attraction between water molecules is strong. Which of the following is a
Margaret [11]
<span>When water freezes, the molecules move farther apart. </span>
4 0
3 years ago
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For which of the following activities might you want to hire a chemist?
worty [1.4K]

For which of the following activities might you want to hire a chemist?

Answer: D. testing a rock sample for gold content

Which of the following procedures involves a physical change in one of the substances?

Answer: C. separating a salt solution by evaporating the water

7 0
3 years ago
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Use the tabulated half-cell potentials to calculate the equilibrium constant (K) for the following balanced redox reaction at 25
o-na [289]
The equation Eºcell = 0.0592/n logK must be used to find n and also Eºcell 
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To balance the equation, 6 moles of electrons must be transferred (2 Al and 3 Mg). This will be the value of n in the equation. 
To find Eºcell, you need the reduction potentials which should be given in a table, and given above. Eºcell = -1.66 - (-2.37) = 0.71 V log K = Eºcell x n/0.0592 = 0.71 x 6/0.0592 log K = 71.95 K = 10^71.95 K = 1.1x10^72
6 0
3 years ago
Which element ends in 4d2
Tju [1.3M]

Answer:

Zr (Zirconium)

Explanation:

1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2

3 0
2 years ago
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