The dictionary from #2 falls off the table. How much kinetic energy does it have just before it hits the floor?

A chemical reaction in which an acid and a base react to produce salt and water is called a neutralization reaction. In the neut

Harrizon [31]

Answer:

D, potassium hydroxide

Explanation:

Nitric acid us given and is obviously an acid

8 0

3 years ago

7 Which of the following functional groups is present in an organic compound which gives bubbles on treatment with a saturated s

Damm [24]

Answer:

A. Carboxyl group

Explanation:

The carboxyl group is an organic functional group in chemistry that consists of a carbon atom double-bonded to an oxygen atom and singly linked to a hydroxyl group. Another way to think about it is as a carbonyl group (C=O) with an attached hydroxyl group (O-H).

6 0

3 years ago

Which group of elements are considered to be in the same family?

mash [69]

A. helium, neon and argon, because they are in the same group or column

8 0

3 years ago

Ethanol (C2H5OH) is produced from the fermentation of sucrose in the presence of enzymes.

Klio2033 [76]

Explanation:

to calculate theoratical yield...first we must calculate how much Sucrose moles we have..in order to to do so...we must calculate molar mass of sucrose.

molar mass of sucrose is 342.3 g/mol.

now we can calculate how many sucrose moles we have by dividing the mass with molar mass of sucrose

735g/(342.3g/mol)=2.147mol

theoratically...according to stoichiometry..every 1 mole of sucrose yields 4 moles of ethanol...so...

2.147mole yield 2.147*4mol=8.588mol

now we must calculate weight of that much ethanol..molar mass of ethanol is 46.07 g/mol...

so we can multiple moles by molar mass to obtain the weight 8.588mol*46.07g/mol=395.649g

but we only obtained 310.5g...so percentage we have is

$\frac{310.5}{395.649} \times 100$

78.47%

if there is trouble with molar mases I used....use what you calculated...

If my explanation is good enough...please mark it as brainliest.thanks

5 0

3 years ago

A volume of 60.0 mL of a 0.120 M HNO3 solution is titrated with 0.840 M KOH. Calculate the volume of KOH required to reach the e

german

Answer: 8.57 ml of KOH is required to reach the equivalence point.

Explanation:

To calculate the volume of acid, we use the equation given by neutralization reaction:

$n_1M_1V_1=n_2M_2V_2$

where,

$n_1,M_1\text{ and }V_1$ are the n-factor, molarity and volume of acid which is $HNO_3$

$n_2,M_2\text{ and }V_2$ are the n-factor, molarity and volume of base which is KOH.

We are given:

$n_1=1\\M_1=0.120M\\V_1=60.0mL\\n_2=1\\M_2=0.840M\\V_2=?$

Putting values in above equation, we get:

$1\times 0.120\times 60.0=1\times 0.840\times V_2\\\\V_2=8.57mL$

Thus 8.57 ml of KOH is required to reach the equivalence point.

8 0

4 years ago