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Galina-37 [17]
3 years ago
15

Help Anyone please PLEASE PLEASE PLEASE ALSO PLEASE DO NOT DO THIS FOR POINTS

Chemistry
1 answer:
GarryVolchara [31]3 years ago
6 0
A. The box will move to the right
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PLEASE HELP ASAP!
choli [55]

Answer:

\large \boxed{\text{D. 710 g}}

Explanation:

1. Calculate the molar mass of Na₂SO₄

\begin{array}{ccc}\textbf{Atoms} &\textbf{M}_{\textbf{r}} & \textbf{Mass/u}\\\text{2Na} & 23 & 46\\\text{1S} & 32 & 32\\\text{4O}&16 & 64\\&\text{TOTAL =} & \mathbf{142}\\\end{array}

The molar mass of Na₂SO₄ is 142 g/mol.

2. Calculate the moles of Na₂SO₄

\text{Moles of Na$_{2}$SO}_{4} = \text{2.5 L solution} \times \dfrac{\text{2.0 mol Na$_{2}$SO}_{4}}{\text{1 L solution}} = \text{5.0 mol Na$_{2}$SO}_{4}

3. Calculate the mass of Na₂SO₄

\text{Mass of Na$_{2}$SO}_{4} = \text{5.0 mol Na$_{2}$SO}_{4} \times \dfrac{\text{142 g Na$_{2}$SO}_{4}}{\text{1 mol Na$_{2}$SO}_{4}} = \text{710 g Na$_{2}$SO}_{4}\\\\\text{You need } \large \boxed{\textbf{710 g}} \text{ of Na$_{2}$SO}_{4}

6 0
3 years ago
A reaction is spontaneous if delta G is <br> 1)positive <br> 2)negative <br> 3)zero
miskamm [114]

delta g must be negative in order for the reaction to be spontaneous bb ♡

4 0
3 years ago
Read 2 more answers
Example of electrovalent bond​
olchik [2.2K]

Explanation:

<h3>MgCl2, CaCl2, MgO, Na2S, CaH2, AlF3, NaH, KH, K2O, KI, RbCl, NaBr, CaH2 etc.</h3>

<h2>hope it helps.</h2><h2>stay safe healthy and happy..</h2>
4 0
3 years ago
Read 2 more answers
Which describes why the magma moves in the direction of
kenny6666 [7]

The magma is heated and becomes less dense by the core moving it toward the crust.

Explanation:

Magma is a molten or partially molten rock form. Magma consists of silicate liquid, although carbonate and sulfide melts occur as well. It moves either to depth or to Earth’s surface and is ejected as lava. Suspended crystals and fragments of un-melted rock get transported in the magma dissolved volatiles may separate as bubbles and some liquid get crystallize during movement.

Several interrelated physical properties determine the characteristics of magma, including chemical composition, viscosity, dissolved gases, and temperature.Magma also form igneous rock.

Therefore the magma is heated and becomes less dense by the core moving it toward the crust.

7 0
3 years ago
Read 2 more answers
What is the number of valence electrons in a nitrogen atom in the ground state
ddd [48]

Answer: 5

Explanation:

It just is

6 0
3 years ago
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