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3 years ago

Call me fortnite because boys play me 24/7 it's a joke!!!!!!

Chemistry

2 answers:

elena55 [62]3 years ago

4 0

Answer:

this was funny u made me happy rn that i was sad

Explanation:

guapka [62]3 years ago

4 0

Answer:

ur lost 0 pr dog water box like fish dont talk to me unless u get earnings stop talking get good no earnings ur lost 360 movement still cant help u play keyboard it helps get good kyle thats me freerer then everything ur freere then a walmart basket 1 2 chris brow u LIKE GET GOOD KID UR BAD HEAL PLEASE SO I CAN DO MORE DAMAGE AND CLIP U EVEN HARDER

Explanation:

no pls let me

You might be interested in

How friction reduces the efficiency of machines

Oksi-84 [34.3K]

Hello,

Work is done when a force causes an object to move in the same direction that the force is applied..... Friction reduces efficiency because when two surfaces slide past each other, friction resists their motion, and in real machines, some input work is always used to overcome friction.

Hope this helps!!!! Happy Holidays!!!! (:

8 0

3 years ago

A 0.870 g sample of a monoprotic acid is dissolved in water and titrated with 0.300 M KOH.

Vedmedyk [2.9K]

Answer: The molar mass of monoprotic acid is 126.1 g/mol

Explanation:

To calculate the molarity of solution, we use the equation:

$\text{Molarity of the solution}=\frac{\text{Moles of solute}\times 1000}{\text{Volume of solution (in mL)}}$

Molarity of KOH solution = 0.300 M

Volume of solution = 23.00 mL

Putting values in above equation, we get:

$0.300M=\frac{\text{Moles of KOH}\times 1000}{23.00}\\\\\text{Moles of KOH}=\frac{0.300\times 23.00}{1000}=0.0069moles$

The chemical equation for the reaction of monoprotic acid and KOH follows:

$HA+KOH\rightarrow KA+H_2O$

By Stoichiometry of the reaction:

1 mole of KOH reacts with 1 mole of HA

So, 0.0069 moles of KOH will react with = $\frac{1}{1}\times 0.0069=0.0069$ moles of HA

To calculate the molar mass for given number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Given mass of HA = 0.870 g

Moles of monoprotic acid = 0.0069 mol

Putting values in above equation, we get:

$0.0069mol=\frac{0.870g}{\text{Molar mass of monoprotic acid}}\\\\\text{Molar mass of monoprotic acid}=\frac{0.870g}{0.0069mol}=126.1g/mol$

Hence, the molar mass of monoprotic acid is 126.1 g/mol

3 0

3 years ago

I only have 3 questions left for this, please help!!!!

kakasveta [241]

X is girl, and y is boy, they are formed by fission.

6 0

3 years ago

Read 2 more answers

the atomic number of an element is the number of ______ plus the number of _____ found in the element's nucleus.

marusya05 [52]

Answer:

protons and electrons

Explanation:

The symbol for an atom can be written to show its mass number at the top, and its atomic number at the bottom. To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number.

7 0

3 years ago

Read 2 more answers

Which ionic compound would you expect to have the highest melting point? a. Al-N b. Fe-O C. W-C

Elza [17]

Answer:

b. Fe-O

Explanation:

A way to predict melting points for ionic compounds is with electronegativity.

Electronegativity is a chemical property that describes the tendency of an atom to attract a shared pair of electrons towards itself.

The most electronegativity difference (E.D.), the highest melting point, thus:

E.D. Al-N = 3,0 - 1,6 = 1,4

E.D. Fe-O = 3,5 - 1,8 = 1,7

E.D. W-C = 2,5 - 1,7 = 0,8

The most electronegativity difference is from Fe-O, thus, this ionic compound will have the highest melting point.

I hope it helps!

8 0

3 years ago