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Alik [6]
3 years ago
6

Which statement is true about HCI?

Chemistry
1 answer:
katen-ka-za [31]3 years ago
3 0

Answer:

d- it is an acid because it increases the concentration of hydronium ions

Explanation:

HCl; hydrochloric acid is an acid because it increases the concentration of hydronium ions when in solutions.

An acid is a substance that interacts with water to produce excess hydroxonium ions H₃O⁺ in an aqueous solution.

For example:

               HCl + H₂O → H₃O⁺ + Cl⁻

HCl is classified as a strong acid due to its complete ionization when in solutions.

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A compound has a molar mass of 100 g/mol and the percent composition (by mass) of 65.45% C, 5.45% H, and 29.09% 0. Determine the
coldgirl [10]

Answer:

B) C3H3O and C6H6O2

Explanation:

Given data:

Molar mass of compound = 100 g/mol

Percentage of hydrogen = 5.45%

Percentage of carbon = 65.45%

Percentage of oxygen = 29.09%

Empirical formula = ?

Molecular formula = ?

Solution:

Number of gram atoms of H = 5.45 / 1.01 = 5.4

Number of gram atoms of O = 29.09/ 16 = 1.8

Number of gram atoms of C = 65.45 / 12 = 5.5

Atomic ratio:

            C                      :      H            :         O

           5.5/1.8              :     5.4/1.8     :        1.8/1.8

            3                      :        3          :        1

C : H : O = 3 : 3 : 1

Empirical formula is C₃H₃O.

Molecular formula:

Molecular formula = n (empirical formula)

n = molar mass of compound / empirical formula mass

Empirical formula mass = 12×3 + 1.01 ×3 + 16×1 = 55.03  

n = 100 / 5503

n = 2

Molecular formula = n (empirical formula)

Molecular formula = 2 (C₃H₃O)

Molecular formula = C₆H₆O₂

3 0
3 years ago
C4H8 is _______ .<br><br> A) saturated<br> B) unsaturated
timurjin [86]
The answer is B hope this is right
4 0
3 years ago
Can someone please answer this it’s due today please
Digiron [165]

Explanation:

g is inner layer

e is nucleons

cn we be friends

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4 0
3 years ago
Read 2 more answers
What would be the pressure of 1.0g of O2 contained in a 4.00L container at 293 K?
Natalka [10]

Answer: The pressure will be equal to 0.19 atm.

Explanation:

The Ideal Gas Equation states the relationship among the pressure, temperature, volume, and number of moles of a gas.

The equation is:

PV=nRT

where P = pressure in <em>atm</em>

           V = volume in <em>L</em>

           n = numbers of moles of gas in <em>mol</em>

           R = universal gas constant = 0.08206 \frac{L-atm}{mol - K}

           T = temperature in <em>K</em>

Based on the problem,

mass of O2 = 1.0 g

V = 4.00 L

T = 293 K

mol of O2  = ?

P = ?

We need to calculate the moles of O2 before we can use the Ideal Gas Equation. To solve the number of moles, we use the equation:

no. of moles = \frac{given\ mass\ (in\ grams) }{molar\ mass\ (in\ \frac{grams}{mole}) }

The molar mass of O2 is 32 g/mol, therefore,

no. of moles = \frac{1.0g}{32\frac{g}{mol} }

no. of moles of O2 = 0.03125 mol.

Now we substitute the values into the Ideal Gas equation:

P(4.00L) = (0.03125 mol)(0.08206\frac{L-atm}{mol-K} )(293K)

Solving for P, we will get

P=\frac{(0.03125mol)(0.08206\frac{L-atm}{mol-K})(293K) }{4.00L} \\\\P= 0.1878 atm.

In correct significant figures, P is equal to 0.19 atm.

5 0
3 years ago
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