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3 years ago

FeBr3 : What is the formula of cation or anion for this ionic formula?

1 answer:

4 0

The ionic compound Fe Br3 is electrically neutral.

The oxydation state of Br is -1, which gives a total of 3 negative charges, when you multiply 3 ions times -1 charge.

Then the oxydation state of Fe has to be 3+.

Then the compound is formed by two charged particles, Fe+3 which is positively charged ion or cation, and Br - which is negatively charged or anion.

The algebraic sum of the charges of the ions must result 0 (neutral state).

The formulas of the ions is:

$Fe^{3+}$

and

$Br^{-}$

$FeBr _{3} = Fe^{3+} +3 Br^{-}$

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Which bodies of water in the list are found to the west of the Philippines?

bogdanovich [222]

Answer:

South China sea

Explanation:

To the west is the South China Sea, to the east the Philippine Sea and the Pacific Ocean, and to the south the Celebes Sea (or Sulawesi Sea).

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3 years ago

O The Arrhenius Model of acids and bases applies toward substances that are nonaqueous.O The Arrhenius Model of acids and bases

Alex

ANSWER

Option A

EXPLANATION

Arrhenius defines an acid as a substance that will produce hydrogen ions as the only positive ion when dissolved in water.

He also defines a base as a substance that contains a hydroxide ion (OH^-).

Hence, the Arrhenius Model of acids and bases applies that is applied to the aqueous solution.

The correct answer is option A

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1 year ago

A 4.55 l sample of water contains 0.115 g of sodium ions. determine the concentration of sodium ions in ppm if the density of th

Slav-nsk [51]

<span>When one talks about ppm in a liquid solution someone means mg/L so we would not be using the density. This usually means ug/g or mg/kg 0.115 g Na^+ * 10^6 ug/1 g = 115000 ug/g 4.55 L * 1000 mL/1L = 4550 mL Concentration of Na^+ in ppm: 115000 ug/g /4550 mL = 25.27 pm of sodium ion</span>

6 0

3 years ago

Read 2 more answers

Furan and maleimide undergo the Diels-Alder reaction at 25 °C to give the endo product. When the reaction takes place at 90 °C,

mafiozo [28]

Answer:see attached image

Explanation:

In organic chemistry, a product may be kinetically or thermodynamically favoured. A kinetically favours product forms faster, it may not necessarily be the more stable product. The thermodynamically favoured product forms at a slower rate but is more stable. Often times, the kinetically favoured product rearranges itself to form the thermodynamically favoured product at equilibrium. The endo product of the Diels Alder reaction mentioned in the question is first formed (kinetically favoured) but rearranges to form the exo product (thermodynamically favoured) at equilibrium. This is clear shown in the reaction mechanism attached below.

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3 years ago

2. In contrast to Venus, the coldest temperature yet measured on the surface of

Leviafan [203]

38K

-391°F

Explanation:

Given temperature:

Temperature of Triton = -235°C

Unknown:

Surface temperature of Triton in °F and Kelvin

Solution:

Temperature is the degree of hotness or coldness of a body.

It is usually measured using units of kelvin, degree Celsius and degree Fahrenheit.

tK = 273 + t°C from °C to K

t°F = $\frac{9}{5}$ t°C + 32

tk = temperature in kelvin

t°C = temperature in Celsius

t°F = temperature in Fahrenheit

tK = 273 + (-235) = 38K

t°F = $\frac{9}{5}$ x (-235) + 32 = -423 + 32 = -391°F

learn more:

Heat and temperature brainly.com/question/914750

#learnwithBrainly

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4 years ago