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alex41 [277]
3 years ago
12

PLEASE HELP!!!!! The table below shows the volume of two samples, X and Y, when placed in three containers of different volumes.

Chemistry
1 answer:
Dahasolnce [82]3 years ago
7 0

Answer:

B m8

Explanation:

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If 35 mL of 0.10 Macid solution is neutralized by 21.8 mL of a basic solution, what is the molarity
expeople1 [14]
I don’t understand this one sorry
5 0
4 years ago
A. In the complete reaction of 22.99 g of sodium
fenix001 [56]

Answer : 58.44 g

<h3>Further explanation</h3>

The reaction

\tt Na+Cl\Rightarrow NaCl

mole ratio :

Na : Cl : NaCl = 1 : 1 : 1

Molar mass of Na : 22,989769 g/mol = 22.99 g/mol

Molar mass of Cl : 35,453 g/mol= 35.45 g/mol

Molar mass of NaCl : 58,44 g/mol

Let's check the mol for reactant (Na and Cl) and product(NaCl)

  • mol of Na :

\tt mol=\dfrac{22.99}{22.99}=1

  • mol of Cl :

\tt mol=\dfrac{35.45}{35.45}=1

Then the reactants are completed reacting because it matches the mole ratio, which is 1: 1

so that the mole of the product can be determined from the mol Na or Cl, which is 1

  • mass of NaCl :

\tt =\dfrac{mol~NaCl}{mol~Na}\times MW~NaCl\\\\=\dfrac{1}{1}\times 58.44\\\\=\boxed{\bold{58.44~g}}

3 0
4 years ago
3.
Andreyy89

Answer:

The answer to your question is the second option

Explanation:

Reaction

               Al₂(SO₄)₃  + KOH   ⇒   Al(OH)₃   +   K₂SO₄

Process

1.- Check if the reaction is already balanced

                Reactants             Elements             Products                                                                                

                      2                     Aluminum                   1

                      3                     Sulfur                          1

                     13                     Oxygen                      7

                      1                    Potassium                    2

                      1                     Hydrogen                   3

The reaction is unbalanced

2.- Balance the reaction

                 1Al₂(SO₄)₃  + 6KOH   ⇒  2Al(OH)₃   +  3K₂SO₄

               Reactants             Elements             Products                                                                                

                      2                     Aluminum                   2

                      3                     Sulfur                          3

                     18                     Oxygen                      18

                      6                    Potassium                    6

                      6                     Hydrogen                   6

Now the reaction is balanced. The coefficients are 1, 6, 2, 3.

5 0
3 years ago
Read 2 more answers
An inverted pyramid is being filled with water at a constant rate of 45 cubic centimeters per second. The pyramid, at the top, h
vaieri [72.5K]

Answer:

13.20 cm/s is the rate at which the water level is rising when the water level is 4 cm.

Explanation:

Length of the base = l

Width of the base  =  w

Height of the pyramid = h

Volume of the pyramid = V=\frac{1}{3}lwh

We have:

Rate at which water is filled in cube = \frac{dV}{dt}= 45 cm^3/s

Square based pyramid:

l = 6 cm, w = 6 cm, h = 13 cm

Volume of the square based pyramid = V

V=\frac{1}{3}\times l^2\times h

\frac{l}{h}=\frac{6}{13}

l=\frac{6h}{13}

V=\frac{1}{3}\times (\frac{6h}{13})^2\times h

V=\frac{12}{169}h^3

Differentiating V with respect to dt:

\frac{dV}{dt}=\frac{d(\frac{12}{169}h^3)}{dt}

\frac{dV}{dt}=3\times \frac{12}{169}h^2\times \frac{dh}{dt}

45 cm^3/s=3\times \frac{12}{169}h^2\times \frac{dh}{dt}

\frac{dh}{dt}=\frac{45 cm^3/s\times 169}{3\times 12\times h^2}

Putting, h = 4 cm

\frac{dh}{dt}=\frac{45 cm^3/s\times 169}{3\times 12\times (4 cm)^2}

=13.20 cm/s

13.20 cm/s is the rate at which the water level is rising when the water level is 4 cm.

3 0
3 years ago
Realizar los isomeros geométricos para las siguientes estructuras: 2-hepteno y Ácido 2-butenoico
kramer

Answer:

The cis-trans isomerism (or geometric isomerism ) is a type of stereoisomerism of alkenes and cycloalkanes . A distinction is made between the cis isomer , in which the substituents are on the same side of the double bond or on the same face of the cycloalkane. This is an electronic version in English. [ 1 ]

Their characteristics are:

They both have the same formula.They have different chemical and physical properties.The IUPAC advises against the use of the term geometric isomerism. [ 2 ]

4 0
3 years ago
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