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kvasek [131]
3 years ago
10

Calcium carbonate reacts with hydrochloric acid to form calcium chloride, carbon dioxide, and water. What mass of hydrochloric a

cid will be needed to produce 5.00 x 10 3 kg of calcium chloride?
Chemistry
1 answer:
sergij07 [2.7K]3 years ago
7 0

Answer:

3284.3 kg is the mass of HCl needed to produce 5000 kg of CaCl₂

Explanation:

This is the reaction:

CaCO₃ + 2HCl →  CaCl₂  +  CO₂  +  H₂O

Let's convert the mass of the product to moles (mass (g) / molar mas)

Firstly we must convert kg to g

1 kg = 1000 g

5×10³ kg . 1000 g / 1 kg = 5×10⁶ g

5×10⁶ g / 110.98 g/mol = 45053.1 moles

Ratio is 1:2 So, let's make a rule of three:

1 mol of CaCl₂ was produced by the use of 2 moles of HCl

So 45053.1 moles of salt, were produced by, the double of moles

45053.1 mol . 2 → 90106.2 moles

Let's convert the moles, to mass (mol . molar mass)

90106.2 mol . 36.45 g/mol = 3284375 g → 3284.3 kg

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Element Q is a theoretical nonmetal with atomic number 59. Consider the isotope: Q-95. How many electrons are in an atom of Q-95
Vinil7 [7]

60

Explanation:

The number of electrons in an atom of Q-95 will be 60 electrons.

The atomic number of an atom is the number of protons in the atom of the isotope

This number is unique to every atom and their isotope

An isotope of an atom is the existence of an atom having the same atomic number but different mass numbers.

Since atomic number the same as number of protons, they are the positively charged particles in an atom.

To have a negative charge, the number of electrons must be more than that of protons.

Charge = number of protons - number electrons

  charge = -1

  -1 = 59  - number of electrons

  Number of electrons = 60 electrons

learn more:

Number of subatomic particles brainly.com/question/2757829

#learnwithBrainly

4 0
3 years ago
Calculate the gravitational force of attraction between a 26kg boy and his 5.1kg dog when they are separated by 0.19m
Pavel [41]

Answer:

Gravitational force of attraction G(f) = 2.44 x 10⁻⁷ (approx.)

Explanation:

Given:

Mass M1 = 26 kg

Mass M2 = 5.1 kg

Distance r = 0.19 m

Find:

Gravitational force of attraction G(f)

Computation:

Gravitational force of attraction G(f) = G(m1)(m2)/r²

Gravitational force of attraction G(f) = [6.67 x 10⁻¹¹](26)(5.1)/(0.19)²

Gravitational force of attraction G(f) = 8.84 x 10⁻⁹ / 0.0361

Gravitational force of attraction G(f) = 2.44 x 10⁻⁷ (approx.)

6 0
3 years ago
Circle the correct one from given alternatives.
mash [69]

Answer:

24 is the correct anwer

this the anwer text this u no

3 0
2 years ago
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2. How much heat is released when 432g of water cools down from 710C to 180C?
nadya68 [22]
The heat released by the water when it cools down by a temperature difference AT

is Q = mC,AT

where

m=432 g is the mass of the water

C, = 4.18J/gºC

is the specific heat capacity of water

AT = 71°C -18°C = 530

is the decrease of temperature of the water

Plugging the numbers into the equation, we find

Q = (4329)(4.18J/9°C)(53°C) = 9.57. 104J

and this is the amount of heat released by the water.
7 0
3 years ago
A basketball weighs approximately 1.35 kg. What is this mass in grams (g)?<br><br> step by step
choli [55]

Answer:

1350 g

Explanation: just add a 0

8 0
2 years ago
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