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3 years ago

Balanceo de k20 + H3BO3

Chemistry

1 answer:

kipiarov [429]3 years ago

5 0

Whats your question? id love to help but I’m not sure I understand

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A I think thats what I would put

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3 years ago

A student heats a sample of hydrate once, and the mass of the sample and the evaporating dish is 16.428 g. After a second heatin

jolli1 [7]

Answer:

12.371 g

Explanation:

Given :

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Hydrate\ sample}=25.637\ g$

$m_{evaporating\ dish}+m_{First\ heated\ sample}=16.428\ g$

$m_{evaporating\ dish}+m_{Second\ heated\ sample}=13.266\ g$

Mass of salt hydrate:

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Hydrate\ sample}=25.637\ g$

$m_{Hydrate\ sample}=25.637-m_{evaporating\ dish}\ g=25.637-1.135\ g=24.502\ g$

Mass of salt anhydrous:

$m_{evaporating\ dish}=1.135\ g$

$m_{evaporating\ dish}+m_{Second\ heated\ sample}=13.266\ g$

$m_{Second\ heated\ sample}=m_{salt\ anhydrous}=13.266-m_{evaporating\ dish}\ g=13.266-1.135\ g=12.131\ g$

Mass of water:

$m_{water}=m_{Hydrate\ sample}-m_{salt\ anhydrous}=24.502-12.131\ g=12.371\ g$

$m_{water}=12.371\ g$

4 0

4 years ago

How many types of ions must be present in solution, at minimum, for the phenomenon of selective precipitation to be observed? Yo

saw5 [17]

Answer:

Two (2) types of ions

Explanation:

Metal ions (cations) and negatively charged ions (anions) of either chloride, carbonate, sulphides or hydroxides are present during the selective precipitation.

Majorly, the process determines the metal ions present by initiating precipitation as certain conditions.

I hope this was helpful.

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3 years ago

Which is the correct way to write 602,200,000,000,000,000,000,000 in scientific notation?

sladkih [1.3K]

Answer:

6.022 x 10^23

Explanation:

There are 20 zeros and the 022 are 3 more places.

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4 years ago

When forming a contraction between "does" and "not," what's the correct way to write it? A. Don't B. Does't C. Doesn't D. Doesnt

KatRina [158]

C.Doesn't
do+not=Don't
the other two arent anything.

8 0

3 years ago

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Balanceo de k20 + H3BO3​

Balanceo de k20 + H3BO3