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pochemuha
3 years ago
10

Ionic formula for chromuim 3 fluoride​

Chemistry
1 answer:
GalinKa [24]3 years ago
3 0

CrF3; Cr has a 3+ charge and F has a 1-.

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Why is HCI a strong acid and HCIO a weak acid?
valkas [14]

Strong Acid: dissolves and dissociates 100% to produce protons (H+) 1. seven strong acids: HCl, HBr, HI, HNO3, H2SO4, HClO4, & HClO3 2. ... Weak Acid: dissolves but less than 100% dissociates to produce protons (H+) 1.

4 0
3 years ago
Compare the mass number and atomic number for isotopes of an element
Zanzabum
An isotope is when there is same amount of atomic number but different mass number. It also mean that only the number of neutrons changes if there is an isotope present.
3 0
3 years ago
A 19.0 L helium tank is pressurized to 26.0 atm. When connected to this tank, a balloon will inflate because the pressure inside
vesna_86 [32]

Answer:

The new volume of the balloon when the pressure equalised with the pressure of the atmosphere = 494 L.

The balloon expands by am additional 475 L.

Explanation:

Assuming Helium behaves like an ideal gas and temperature is constant.

According to Boyle's law for ideal gases, at constant temperature,

P₁V₁ = P₂V₂

P₁ = 26 atm

V₁ = 19.0 L

P₂ = 1 atm (the balloon is said to expand till the pressure matches the pressure of the atmpsphere; and the pressure of the atmosphere is 1 atm)

V₂ = ?

P₁V₁ = P₂V₂

(26 × 19) = 1 × V₂

V₂ = 494 L (it is assumed the balloon never bursts)

The new volume of the balloon when the pressure equalised with the pressure of the atmosphere = 494 L.

The balloon expands by am additional 475 L.

Hope this Helps!!!

6 0
4 years ago
Compare and contrast analog and digital signals
Gennadij [26K]

Answer:

ones analog and ones digital.

Explanation:

The difference between the two are that one loses quality but is easier to transfer, however digital takes longer to transfer, however this makes the quality the same.

7 0
3 years ago
If a reaction vessel at that temperature initially contains 0.0400 M NO2 and 0.0400 M N2O4, what is the concentration of NO2 at
LenaWriter [7]

Answer:

0.088 M.

Explanation:

Assuming that the temperature is 429 K, we can calculate the concentration of NO₂. Kc(429K) = 0.490.

The reaction is:

N₂O₄(g)  ⇄  2NO₂(g)

0.04             0.04

0.04 - x          0.04 + 2x

The constant of the reaction is:

Kc = \frac{[NO_{2}]^{2}}{[N_{2}O_{4}]]}

0.490 = \frac{(0.04 + 2x)^{2}}{0.04 - x}

0.490*(0.04 - x) - (0.04 + 2x)^{2} = 0

By solving the above equation for x we have:

x = 0.024 = [NO₂]      

Hence the concentration of NO₂ is:

[NO_{2}] = 0.04 + 2*0.024 = 0.088 M

I hope it helps you!

6 0
3 years ago
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