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notsponge [240]
4 years ago
14

How many ml is in a teaspoon??

Chemistry
1 answer:
horrorfan [7]4 years ago
3 0
4.92892 but not exactly sure
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The melting and freezing points of a substance are the same temperature.<br> a. True<br> b. False
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That's false. A melting point is hot/warm, while the freezing point is cold.
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This gardener started with much smaller plants in this park. Over time, the garden has grown into a large display of brilliant f
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3 years ago
A solution is to be prepared with a sodium ion concentrationof
Lina20 [59]

Answer : The mass of sodium sulfate needed is 5.7085 grams.

Explanation : Given,

Concentration of sodium ion = 0.148 mol/L

Volume of solution = 2.29 L

Molar mass of sodium sulfate = 142 g/mole

First we have to determine the moles of sodium ion.

\text{Concentration of sodium ion}=\frac{\text{Moles of sodium ion}}{\text{Volume of solution}}

0.184mol/L=\frac{\text{Moles of sodium ion}}{2.29L}

\text{Moles of sodium ion}=0.08035mole

Now we have to calculate the moles of sodium sulfate.

The balanced chemical reaction will be,

Na_2SO_4\rightarrow 2Na^++SO_4^{2-}

As, 2 moles of sodium ion produced from 1 moles of Na_2SO_4

So, 0.08035 moles of sodium ion produced from \frac{0.08035}{2}=0.040175 moles of Na_2SO_4

Now we have to calculate the mass of sodium sulfate.

\text{Mass of }Na_2SO_4=\text{Moles of }Na_2SO_4\times \text{Molar mass of }Na_2SO_4

\text{Mass of }Na_2SO_4=0.040175mole\times 142g/mole=5.7085g

Therefore, the mass of sodium sulfate needed is 5.7085 grams.

3 0
4 years ago
Except for the reaction between iron and sulfur, none of the reactions in this
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he total number of each of the atoms on the left and the right are the same thus the reaction equation is balanced.

<h3>What is the law of conservation of mass?</h3>

The law of conservation of mass states that, mass can neither be created nor destroyed. In view of the law of conservation of mass, the total mass of the reactants on the left-hand side must be the same as the total mass of products at the right hand side.

Thus is the total mass of the reactants and the products are not the same, it then follows that the reaction does not demonstrate the law of conservation of mass. In this case, the total number of each of the atoms on the left and the right are the same thus the reaction equation is balanced.

Learn more about conservation of mass:brainly.com/question/13383562

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4 0
2 years ago
On-metals in group 17 on the periodic table most commonly form which type of ion?
EleoNora [17]

Answer:

1- ions

Explanation:

Non-metals in group 17 on the periodic table most commonly forms -1 ions with other chemical species.

This is because of their atomic structure

Group 17 is made up of halogens which are fluorine, chlorine, bromine, iodine and astatine.

Because each of the elements has seven electrons in the outer shells of their atoms which implies that they lack one electron to become an octet, the elements are all univalent and also acceptors of electrons.

3 0
3 years ago
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