1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sergeinik [125]
2 years ago
10

What is the number of moles of kf in a 29-gram sample of the compound.

Chemistry
1 answer:
Irina18 [472]2 years ago
6 0

<em><u>Given</u></em>

Weight of pottasium fluoride (KF) = 29 gms

<em><u>To find</u></em>

Number of moles of pottasium fluoride = ?

<em><u>Solution</u></em>

we know that molar mass of KF = 58.0967 g

Now,

number \:  of  \: moles = \ \\ \frac{given \: weight \: of \: subtance}{molar \: mass}

<em>Number of moles = 29/58 = 0.5 moles</em>

<u><em>Thanks</em><em> </em><em>for</em><em> </em><em>joining</em><em> </em><em>brainly</em><em> </em><em>community</em></u>

You might be interested in
Write a balanced chemical equation for the standard formation reaction of liquid acetic acid hch3co2.
Afina-wow [57]

The balanced chemical equation for the standard formation reaction of liquid acetic acid is given as ,

2C(gr) +2H_{2} (g) +O_{2} (g)  → CH_{3} COOH(l)

The reaction that form the products from their elements in their standard state is called formation of reaction .The acetic acid consist C , H , and O , So, determine their standard state . Carbon is graphite at 25°C and 1 atm , whereas hydrogen and oxygen are diatomic gases . Hence , we start with unbalanced reaction.

C(gr) +H_{2} (g) +O_{2} (g) → CH_{3} COOH(l)

The balanced chemical equation for the standard formation reaction of liquid acetic acid as,

2C(gr) +2H_{2} (g) +O_{2} (g)  → CH_{3} COOH(l)

The combustion of liquid acetic acid is given as,

CH_{3} COOH(l) + 2O(g) → 2CO_{2}((g) +2H_{2} O(l)                    ΔH =-873

learn more about  balancing chemical equation

brainly.com/question/15052184

#SPJ4

5 0
2 years ago
Consider the first-order reaction shown here. the yellow spheres in the pictures to the right represent the reactant,
Luda [366]
The rate constant of the reaction K we can get it from this formula:

K=㏑2/ t1/2 and when we have this given (missing in question):
that we have one jar is labeled t = 0 S and has 16 yellow spheres inside and the jar beside it labeled t= 10 and has 8 yellow spheres and 8 blue spheres and the yellow spheres represent the reactants A and the blue represent the products B

So when after 10 s  and we were having 16 yellow spheres as reactants and becomes 8 yellow and 8 blue spheres as products so it decays to the half amount so we can consider T1/2 = 10 s
a) by substitution in K formula:
∴ K = ㏑2 / 10 = 0.069 
The amount of A (the reactants) after N half lives = Ao / 2^n
b) so no.of yellow spheres after 20 s (2 half-lives) =  16/2^2 = 4
and the blue spheres = Ao - no.of yellow spheres left = 16 - 4 = 12
c) The no.of yellow spheres after 30 s (3 half-lives) = 16/2^3 = 2
and the blue spheres = 16 - 2 = 14

8 0
3 years ago
As the [ht] in a solution decreases, what happens to the [OH???
dimulka [17.4K]
Why you saying we can download an answer we’re here for an answer
6 0
3 years ago
Which is being developed by chemists to supplement fossils fuels?
MaRussiya [10]

Answer:

bio diesel

Explanation:

bio diesel is a recent development to supplement fossil fuels

8 0
3 years ago
Read 2 more answers
Which bond is least polar <br> N-O<br><br> S-O<br><br> H-O<br><br> C-O
Sphinxa [80]

Answer:

Her Eid per Ruth Jααte Hαin wo Humse,

αb bαtαo Hum Eid Mαnαye yα unko.

ہر عید پر روٹھ جاتے ہیں وہ ہم سے

اب بتاؤ ہم عید منائے یا ان کو

ik ishq ka gam aafat aur us pe ye dil aafat

ya gam na diya hota ya dil na diya hota

bas ek jhijhak hai haal-e-dil sunaane mein,

ki tera bhi jikr aaega mere is phasaane mein.

kya kahoon kis tarah se jita hoon

gam ko khaata hoon aansoo pita hoon

8 0
3 years ago
Other questions:
  • What is a scientific claim
    9·1 answer
  • NH_{4}Cl and NaCl<br> Balanced Equation<br> Total Ionic Equation<br> Net Ionic Equation
    12·1 answer
  • Why does a solid change to liquid when heat is added?
    5·1 answer
  • How many ml of concentrated hydrochloric acid would be required to make 1 L of a 0.2 M solution? Assume that concentrated hydroc
    15·1 answer
  • (Please help!)
    10·1 answer
  • How many moles of hydrogen are in the sample?<br> Round your answer to 4 significant digits.
    6·1 answer
  • What is a gas quick!
    5·1 answer
  • What is the lewis structure for silicon tetrachloride, SiCl4?
    14·1 answer
  • An ion with 11 protons 12 neutrons and a charge of + 1 has an atomic number of
    6·1 answer
  • Which particle model diagram represents xenon at stp?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!