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olga2289 [7]
2 years ago
6

Fe2O3 + 3H2 --> 2Fe + 3H2OIs this right?

Chemistry
1 answer:
lesantik [10]2 years ago
7 0

Answer:

3Fe2O3 + H2 --> 2Fe3O4 + H2O

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Is the first part "kilo" from the word kilograms a suffix, prefix or unit???​
Nikolay [14]

Answer:

Kilo is a prefix

Explanation:

Prefixes are the beginning of words.

Thus KILOgram is at the beginning.

Suffix is at the END of a word

Unit is the body of the word

7 0
3 years ago
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What is the density of an 84.7 g sample of an unknown substance if the sample occupies 49.6cm cubed
Ahat [919]

Answer:

             1.70 g.cm⁻³

Solution:

Data Given;

                   Mass  =  84.7 g

                   Volume  =  49.6 cm³

                   Density  =  ?

Formula Used;

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Putting values,

                   Density  =  84.7 g ÷ 49.6 cm³ 

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7 0
3 years ago
What is the concentration of hydronium ions and hydroxide ions
nikdorinn [45]
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Methylamine (ch3nh2) is a weak base. at equilibrium, which expression equals the base dissociation constant (kb) of methylamine?
Molodets [167]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions.

Below are the choices that can be found elsewhere:

a. [CH3NH-] * [OH-] / [CH3NH3+] 
<span>b. [CH3NH3+] / ([CH3NH2] * [OH-]) </span>
<span>c. [CH3NH3+] * [OH-] / [CH3NH2] </span>
<span>d. [CH3NH3+] * [OH-] / [CH3NH2] * [H2O] 
</span>
The answer is C. 
4 0
3 years ago
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