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makkiz [27]
3 years ago
15

0.005 kg = how many dg ?

Chemistry
2 answers:
Ymorist [56]3 years ago
8 0
0.005 kg = 50 dg
Hope this helps
muminat3 years ago
7 0

Answer:

There are 50 decigrams in 0.005 kilo grams.

Explanation:

In 1 kilograms there are 10,000 decigrams.

1 kilo gram = 10,000 deci grams

So, 0.005 kg will be equal to:

0.005 kg = 0.005\times 10,000 dg = 50 dg

There are 50 decigrams in 0.005 kilo grams.

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Answer:

Sodium oxalate is a basic salt. In water it can be dissolved and dissociated.

The oxalic acid in water has two dissociations.

Explanation:

Na2C2O4 ---> 2Na+   +  C2O4-2

Sodium oxalate is the conjugate base of a weak acid. In water this salt, dissociates completely giving rise to the sodium and oxalate ions. As Na+ comes from a strong base, in water it does not produce hydrolysis while oxalate does react in water, because it takes a proton from it and it generates a basic hydrolysis releasing OH-.

C2O4-2  + H2O ⇄  HC2O4-  +  OH-

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The HC2O4- has a second hydrolisis, it takes another proton from water to form oxalic acid.

HC2O4-  +  H2O ⇄  H2C2O4  +  OH-

The oxalic acid acts as a weak acid, it can release 2 protons to water, to make oxalate (its conjugate base).

H2C2O4  + H2O ⇄ H3O+  + HC2O4-

HC2O4-  +  H2O ⇄  H3O+  C2O4-2

The  HC2O4-  acts as an ampholyte since it accepts and delivers protons simultaneously.

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4 years ago
How many moles are in 9.8 grams of calcium?
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<span>when the number of moles Ca = mass of Ca / molar mass of Ca.

and we can get the molar mass of Ca, it is = 40 g/mol

and we have already the mass of Ca (given) = 9.8 g

so, by substitution: the moles Ca = 9.8 g / 40 g/mol

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