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stepan [7]
3 years ago
15

HELP!!!

Chemistry
1 answer:
ruslelena [56]3 years ago
7 0
A positively charged ion is attracted to a negatively charged ion. ... represents the simplest ratio of the ions involved in the ionic compound. Oxyanion. is a polyatomic ion composed of an element and one or more oxygen atoms.
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What mass of K2SO4 would you measure out to prepare 550 ml of a 0.76 M solution
Nikolay [14]
The molecular weight of K2SO4 is 174.26 g/mole. The mass of K2SO4 required to make this solution is calculated in the following way. 
550mL * (0.76mole/1000mL) * (174.26g/mole) = 72.84gram
<span>I hope this helps.</span>
5 0
3 years ago
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How many electrons are there in an atom of nickel?.
Maurinko [17]

Nickel has 28 electrons
5 0
3 years ago
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Stolb23 [73]

Answer:

Um english please I don’t know Jewish

Explanation:

6 0
3 years ago
Find the "density" of a copper sample whose mass is 134.4 grams and whose volume is 15.0mL
Sonja [21]

Answer:

8.96 g/mL

Explanation:

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3 0
2 years ago
effect. RbClO(s) → Rb+(aq) + ClO−(aq) HClO(aq) + H2O(l) equilibrium reaction arrow H3O+(aq) + ClO−(aq) The degree of dissociatio
Lemur [1.5K]

Explanation:

Common ion effect is defined as the effect which occurs on equilibrium when a common ion (an ion which is already present in the solution) is added to a solution. This effect generally decreases the solubility of a solute.

Equilibrium reaction of strontium sulfate and sodium sulfate follows the equation:

RbClO(s)\rightarrow Rb^{+}(aq.)+ClO^{-}(aq.)

HClO(aq)+H_2O\rightleftharpoons H_3O^+(aq.)+ClO^{-}(aq.)

According to Le-Chateliers principle: If there is any change in the variables of the reaction, the equilibrium will shift in the direction in order to minimize the effect.

In the equilibrium reactions, hypochlorite ion is getting increased on the product side, so the equilibrium will shift in the direction to minimize this effect, which is in the direction of hydrogen hypochlorite.

Thus, the addition hypochlorite ions will shift the equilibrium in the left direction.

The dissociation of hydrogen hypochlorite is suppressed due to the common ion effect.

8 0
3 years ago
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