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Feliz [49]
2 years ago
10

What volume of hydrogen ( in L ) is produced from the complete reaction of 56.49 g of magnesium metal at STP

Chemistry
1 answer:
alexandr1967 [171]2 years ago
6 0

Answer:

<em>Mg = 24.30 g/mol) Mg(s) + 2HCl(aq) MgCl2(aq) + H2(g) Hint: 1 mole of gas at STP occupies 22.4 L</em>

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All organic compounds contain ______, hydrogen, and usually oxygen. nitrogen. phosphorus. sulfur carbon.
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You've just solved a problem and the answer is the mass of an electron, me=9.11×10−31kilograms. How would you enter this number
mihalych1998 [28]

The mass of an electron can be expressed in the box as \boxed{{m_e} = 9.1 \times {{10}^{ - 31}}{\text{ kg}}}.

Further explanation:

Atom is the smallest particle that can be present in any element. It is also known as the building unit of matter. Each atom has a central part that is known as the atomic nucleus. There are three subatomic particles that constitute the atom. These particles are protons, neutrons, and electrons. The atomic nucleus consists of protons and neutrons, both are collectively called nucleons. Electrons revolve around the nucleus of an atom in definite orbits.

Protons are positively charged subatomic particles, electrons are negatively charged and neutrons have no charge. Since electrons carry a unit negative charge, these create an electric field around them. These also participate in nuclear reactions. The mass of an electron \left( {{m_e}} \right) is 9.1 \times {10^{ - 31}}{\text{ kg}}, that of protons is 1.6726219 \times {10^{ - 27}}{\text{ kg}} and that of neutrons is 1.674927471 \times {10^{ - 27}}{\text{ kg}}. The electrons are responsible for chemical properties of elements. The distribution and arrangement of electrons is used to predict whether the element will be inert or reactive.

Therefore the required answer is \boxed{{m_e} = 9.1 \times {{10}^{ - 31}}{\text{ kg}}}.

Learn more:

  1. Component of John Dalton’s atomic theory: brainly.com/question/2357175
  2. Basis of investigation for the scientists: brainly.com/question/158048

Answer details:

Grade: Senior School

Subject: Chemistry

Chapter: Atomic structure

Keywords: atom, matter, atomic nucleus, proton, electron, neutron, subatomic particle, nuclear reactions, electric field, reactive, inert.

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4 years ago
Mr. Greenjeans wants to know which fertilizer helps grow the biggest pumpkins. He plants three pumpkin seeds of the same variety
andrew11 [14]
A)Mr.Greenjeans needs a control group for comparison.
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3 0
4 years ago
Read 2 more answers
Determine the empirical formula of a compound containing 8.56 g silicone of 43.2 g of chlorine
SpyIntel [72]

The empirical formula of the compound is SiCl₄.

<h3>Empirical formula of the compound</h3>

mass of silicon = 28 g/mol

mass of chlorine = 35.5 g/mol

<h3>molar ration: </h3>

Si = 8.56/28   =  0.306

Cl = 43.2/35.5  = 1.216

<h3>Combining ratio</h3>

Si = 0.306/0.306 = 1

Cl = 1.216/0.306 = 4

empirical formula = SiCl₄

Thus, the empirical formula of the compound is SiCl₄.

Learn more about empirical formula here: brainly.com/question/1603500

#SPJ1    

6 0
2 years ago
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