All categories

3 years ago

How many formula units of silver fluoride, AgF, are equal to 42.15 g f this substance?

Chemistry

1 answer:

s2008m [1.1K]3 years ago

7 0

Answer:

1.99 x 10²³ formula units

Explanation:

Given parameters:

Mass of AgF = 42.15g

Unknown:

The amount of formula units

Solution:

To solve this problem, we set out by find the number of moles in this compound from the given mass.

Number of moles = $\frac{mass}{molar mass}$

molar mass of AgF = 107.9 + 19 = 126.9g/mol

Number of moles = $\frac{42.15}{126.9}$ = 0.33 moles

1 mole of a substance = 6.02 x 10²³ formula units

0.33 moles of AgF = 0.33 x 6.02 x 10²³ = 1.99 x 10²³ formula units

You might be interested in

The heat generated from the explosion is absorbed by the building and increases the temperature of the building. the property th

Brut [27]

Answer:Heat is a type of ENERGY. When absorbed by a substance, heat causes inter-particle bonds to weaken and break which leads to a change of state (solid to liquid for example). Heat causing a phase change is NOT sufficient to cause an increase in temperature.

Explanation:

7 0

1 year ago

Which answer best defines physical property

yulyashka [42]

Any property that is measurable, whose value describes a state of a physical system.

8 0

3 years ago

The bonds of oxygen molecules are broken by sunlight. The minimum energy required to break the oxygen-oxygen bond is 495 kJ/mol

olga_2 [115]

Answer:

The wavelength of sunlight is required to break the bond in one oxygen molecule is 242 nm.

Explanation:

Energy required to break the 1 mol oxygen-oxygen bond:

=495 kJ=495000J

1 mol = $6.022\times 10^{23}$ molecules

Energy required to break 1 molecule of oxygen molecule= E

= $E=\frac{495000 J}{6.022\times 10^{23}}=8.219\times 10^{-19} J$

The energy required to break the 1 molecule of oxygen is equal to enrgy of one photon of a sunlight.

$E=\frac{h\times c}{\lambda}$

where,

$\lambda$ = wavelength of the light

E = energy of the photon

h = Planck's constant = $6.63\times 10^{-34}Js$

c = speed of light = $3\times 10^8m/s$

$\lambda=\frac{h\times c}{E}$

$\lambda =\frac{6.63\times 10^{-34}Js \times 3\times 10^8m/s}{8.219\times 10^{-19} J}=2.42\times 10^{-7} m=242 nm$

The wavelength of sunlight is required to break the bond in one oxygen molecule is 242 nm.

4 0

3 years ago

Distinguish between ethane ethyne and ethene<br>

umka21 [38]

Answer:

ethane=c2h6

ethyne=c2h2

ethene=c2h6

Explanation:

ethane has single bond between carbon atoms(it is alkane.) ethyne has triple bond between carbon atoms(it is alkyne) ethene has double bond between carbon atoms (it is alkene)

7 0

3 years ago

The citric acid cycle (cac) is activated in the presence of oxygen, but what is the link between the cac and oxygen? pick the on

Pani-rosa [81]

The answer in this question which is asking about the link between the CAC and oxygen is that the major product of the cac is nadh, the principle electron donor to the o2 , the last electron acceptor in the electron-transport system. The answer in this question is D.

4 0

4 years ago