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
victus00 [196]
3 years ago
7

Magnesium (24.48g) reacts with hydrochloric acid (xg) to produce hydrogen gas (2.04g) and magnesium chloride (96.90g). How much

hydrogen chloride was used in the reaction?
Chemistry
2 answers:
vovangra [49]3 years ago
6 0

Answer:

74.46

Explanation:

i did the k-12 thing just 4 u mamas :0

andriy [413]3 years ago
4 0

Answer:

Mass = 73.73 g

Explanation:

Given data:

Mass of Mg used = 24.48 g

Mass of HCl used = ?

Mass of hydrogen gas produced = 2.04 g

Mass of Magnesium chloride produced = 96.90 g

Solution:

Chemical equation:

Mg + 2HCl   →    MgCl₂ + H₂

Number of moles of Mg:

Number of moles = mass/ molar mass

Number of moles = 24.48 g/ 24.305 g/mol

Number of moles = 1.01 mol

Now we will compare the moles of Mg with HCl from balance chemical equation.

                              Mg             :            HCl

                               1                ;               2

                            1.01              :           2/1× 1.01 = 2.02 mol

Mass of HCl react:

Mass = number  of moles × molar mass

Mass =  2.02 ×  36.5 g/mol

Mass = 73.73 g

You might be interested in
2. The pressure of the oxygen gas inside a
Flauer [41]

Answer: 4.41 atm

Explanation:

Given that,

Original pressure of oxygen gas (P1) = 5.00 atm

Original temperature of oxygen gas (T1) = 25°C

[Convert 25°C to Kelvin by adding 273

25°C + 273 = 298K

New pressure of oxygen gas (P2) = ?

New temperature of oxygen gas (T2) = -10°C

[Convert -10°C to Kelvin by adding 273

-10°C + 273 = 263K

Since pressure and temperature are given while volume is held constant, apply the formula for Charle's law

P1/T1 = P2/T2

5.00 atm /298K = P2/263K

To get the value of P2, cross multiply

5.00 atm x 263K = 298K x V2

1315 atm•K = 298K•V2

V2 = 1315 atm•K / 298K

V2 = 4.41 atm

Thus, the new pressure inside the canister is 4.41 atmosphere

4 0
3 years ago
A bike rider approaches a hill with a speed of 8.5 m/s. The total mass of the bike and the rider is 85 kg. Find the kinetic ener
krek1111 [17]

KE=3070.625 J

Height = 3.686 m

<h3>Further explanation</h3>

mass of bike+rider=85 kg

velocity = 8.5 m/s

\tt KE=\dfrac{1}{2}mv^2\\\\KE=\dfrac{1}{2}\times 85\times 8.5^2\\\\KE=3070.625~J

Conservation of energy :

(KE+PE)₁ (downhill) = (KE+PE)₂ (up the hill)

PE₁=0⇒h=0

KE₂=0⇒v=0(stop), so equation becomes :

KE₁=PE₂

\tt KE_1=3070.625\\\\KE_1=mgh_2\\\\3070.625=85\times 9.8\times h\Rightarrow h=3.686~m

5 0
3 years ago
Which of the elements below has the greatest electronegativity? <br> He <br> F <br> Fr <br> Rn
Law Incorporation [45]

F.
it's the greatest electron "hogger"
as you get closet to it, the stronger the electro negitivity.
He is halogen : they don't like to gain electrons. they are already stable.

Fr and Rn
are metals as far is I can remember. they would prefer losing electrons.
3 0
3 years ago
Read 2 more answers
How many grams of aluminum are needed to completely react with<br> 192 g of oxygen gas?
OleMash [197]

Answer:

4.28g

Explanation:

6 0
3 years ago
Help with this question please i will mark you brainliest!!!
tamaranim1 [39]

Answer:

b

Explanation:

5 0
3 years ago
Read 2 more answers
Other questions:
  • In 1928, 47.5 g of a new element was isolated from 660 kg of the ore molybdenite. the percent by mass of this element in the ore
    9·2 answers
  • Which one doesnt belong in the list below?
    9·1 answer
  • An object is uniformly accelerated from rest to a speed of 35 meters per second in 7 seconds. The acceleration of the object is
    8·2 answers
  • Where does the stonefish hide
    9·2 answers
  • Reaction 1: c3h8(
    12·1 answer
  • Find the energy of a photon of light if the wavelength of the light wave is 6.88 x 10–7m
    11·1 answer
  • Please help help ASAP Please help It’s do in a 1 hour What conclusion can you draw about the relationship between physical activ
    8·2 answers
  • Which is a homogeneous mixture?
    7·1 answer
  • Im literally gonna cry . what is this
    15·2 answers
  • Write the empirical formula of at least four binary iconic compounds that could be formed from the following ions:
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!