What is always true of a binary compound ?

VashaNatasha [74]

Hsiang a Allahabad. Alaskans a w

3 0

3 years ago

Compared to the bedrock layers above and below the rock ledge shown at the waterfall, the characteristic that is primarily respo

lubasha [3.4K]

The best and most correct answer among the choices provided by the question is the first choice. The characteristic that is primarily responsible for the existence of the rock ledge is its greater resistance to weathering. I hope my answer has come to your help. God bless and have a nice day ahead!

5 0

3 years ago

Read 2 more answers

A) beaker 1 b) beaker 2 c) beaker 3 d) beaker 1,2,&3 i really need help haha ty

Irina18 [472]

Beaker 3 shows a clear chemical reaction.

4 0

3 years ago

Hannah does an experiment she has two colorless chemicals that she mixes together in a beaker which of the following indicates t

mrs_skeptik [129]

1.the chemical change color from colorless to purple

2. A yellow gas forms

3.a brown solid forms in the bottom of the beaker

4.the temperature of the chemicals rises 15 Celsius

Explanation:

All of the options are proofs that chemical change has occurred.

A chemical change is one with the following properties:

A new kind of matter is usually formed as seen by the gas evolution and the formation of the insoluble precipitate i.e brown solid at the bottom of the beaker.
They are not easily reversible.
Usually accompanied by energy changes as seen in the rise in temperature.
Color changes can also infer chemical changes in a reaction.

learn more:

Chemical change brainly.com/question/9388643

#learnwithBrainly

8 0

3 years ago

References Use the References to access important values if needed for this question A student ran the following reaction in the

ANTONII [103]

Answer:

19.27

Explanation:

Some values are corrected from correct source.Thus,

Moles of SO₂ = 8.19x10⁻² moles

Moles of O₂ = 8.10x10⁻² moles

Volume = 1 L

$Molarity=\frac{Moles\ of\ solute}{Volume\ of\ the\ solution}$

Concentration of SO₂ = 8.19x10² M

Concentration of O₂ = 8.10x10 M

Considering the ICE table for the equilibrium as:

2SO₂ (g) + O₂ (g) ⇔ 2SO₃ (g)

t = o 8.19x10⁻² 8.19x10⁻²

t = eq -2x -x 2x

--------------------------------------------- --------------------------

neq: 8.19x10⁻² -2x 8.19x10⁻² -x 2x

Given:

Equilibrium concentration of O₂ = 5.98x10⁻² M = 8.19x10⁻² -x

Thus, x = 0.0212 M

[SO₂] = 8.19x10⁻² - 2*0.0212 = 0.0395 M

[SO₃] = 2*0.0212 = 0.0424 M

The expression for the equilibrium constant is:

$K_c=\frac {[SO_3]^2}{[SO_2]^2[O_2]}$

$K_c=\frac{{0.0424}^2}{{0.0395}^2\times 0.0598}$

K = 19.27

4 0

3 years ago