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3 years ago

Give the systematic names of these compounds. spelling counts! (a) cui(s) (b) fe2o3(s) (c) cof2(s) (d) feo(s)

Chemistry

1 answer:

Ugo [173]3 years ago

6 0

Answer : The name of the compounds are,

$CuI(s)$ = Copper(I)iodide

$Fe_2O_3(s)$ = Iron(III)oxide

$CoF_2(s)$ = Cobalt(II)fluoride

$FeO(s)$ = Iron(II)oxide

Explanation :

Naming rules for the compounds :

write the cation name first then name the anion.
If the cation is the transition metals with various charges, write the charge by using parenthesis and Roman numerals after the metal name.
For mono-atomic anions, use suffix (-ide).

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Coefficients to lowest possible ratio, if necessary.

dangina [55]

Coefficients with the lowest ratio indicate the relative amounts of substances in a reaction. For example, chemical reaction: 2H₂ + O₂ → 2H₂O

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3 years ago

Recovery standards are a necessary tool for determining exactly how much of a particular analyte you are able to extract from a

Dafna11 [192]

Answer:

2.05mg Fe/ g sample

Explanation:

In all chemical extractions you lose analyte. Recovery standards are a way to know how many analyte you lose.

In the problem you recover 3.5mg Fe / 1.0101g sample: 3.465mg Fe / g sample. As real concentration of the standard is 4.0 mg / g of sample the percent of recovery extraction is:

3.465 / 4×100 = 86,6%

As the recovery of your sample was 1.7mg Fe / 0.9582g, the Iron present in your sample is:

1.7mg Fe / 0.9582g sample× (100/86.6) = 2.05mg Fe / g sample

I hope it helps!

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4 years ago

Write out the word equations for these reactions. ) Hydrogen reacts with oxygen to form water.

ale4655 [162]

Answer:

H2O

Explanation:

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4 0

3 years ago

I just started learning about kinetic molecular theory, and I’m not sure how to answer the question circled below

lions [1.4K]

Answer : The value of 'R' is $0.0821\text{ L atm }mol^{-1}K^{-1}$

Solution : Given,

At STP conditions,

Pressure = 1 atm

Temperature = 273 K

Number of moles = 1 mole

Volume = 22.4 L

Formula used : $R=\frac{PV}{nT}$

where,

R = Gas constant

P = pressure of gas

T = temperature of gas

V = volume of gas

n = number of moles of gas

Now put all the given values in this formula, we get the values of 'R'.

$R=\frac{(1atm)\times (22.4L)}{(1mole)\times (273K)}$

$R=0.0821\text{ L atm }mol^{-1}K^{-1}$

Therefore, the value of 'R' is $0.0821\text{ L atm }mol^{-1}K^{-1}$ .

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3 years ago

Identify the correct ranking of bonds or forces in order from strongest to weakest is:

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The answer is (in order from strongest to weakest);

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dipole-dipole

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3 years ago