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Ksju [112]
3 years ago
13

Question 19-20 I’m not really sure, can someone help me

Chemistry
1 answer:
Nesterboy [21]3 years ago
6 0
Hi my name is Jaleesa The answer = -1
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HS- is amphoteric; it can behave as either an acid or a base.
Tamiku [17]

Answer:

HS+Na=>NaS+1/2H2(here HS- acts as an acid)

HS-. + HCl=> H2S(g)+ Cl-(here HS- acts as a base)

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Why it’s possible to walk through air but not a concrete wall
Sunny_sXe [5.5K]

well you can't walk through the air but you can't walk through a concrete wall because all of the solid atoms holding it together

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3 years ago
Weight in grams of NaCl
Allisa [31]

Answer: 58.44g

Explanation: The molar mass of NaCl is 58.44g.

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3 years ago
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What is the potential energy of your 3 kg puppy that is sitting in the grass in your backyard?
lisov135 [29]

As we know that

P.E. = mgh

where,

P.E. = Potential energy of the object =?

m= mass of object= 3kg

g= acceleration due to gravity = 9.8 ms^-2

h = height between object and animal = 0 m

Then

P.E. = 3× 9.8 × 0 = 0 Joules or 0J

<em>Have a luvely day!</em>

6 0
2 years ago
Can anyone help with these ?
andriy [413]
Uh no I can’t help but, I hope you have a good day!
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3 years ago
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