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Tju [1.3M]
3 years ago
6

Give reasons. a.Steel is an alloy. b.Sodium is a metal.

Chemistry
1 answer:
JulsSmile [24]3 years ago
4 0

Answer:

  1. <em>stee</em><em>l</em><em> </em><em>is</em><em> </em><em>an</em><em> </em><em>allo</em><em>y</em><em> </em><em>because</em><em> </em><em>steel</em><em> </em><em>when</em><em> </em><em>oth</em><em>er</em><em> </em><em>ele</em><em>ments</em><em> </em><em>compri</em><em>sing</em><em> </em><em>metals</em><em> </em><em>and</em><em> </em><em>n</em><em>o</em><em>n</em><em>metals</em><em> </em><em>a</em><em>re</em><em> </em><em>adde</em><em>d</em><em> </em><em>to</em><em> </em><em>Carbon</em><em> </em><em>ste</em><em>el</em><em> </em><em>,</em><em> alloy</em><em> </em><em>ste</em><em>el</em><em> </em><em>is</em><em> </em><em>for</em><em>med</em><em>.</em>
  2. <em>Sodi</em><em>um</em><em> </em><em>is</em><em> </em><em>a</em><em> </em><em>meta</em><em>l</em><em> </em><em>beca</em><em>use</em><em> </em><em>it</em><em> </em><em>i</em><em>s</em><em> </em><em>hi</em><em>ghly</em><em> </em><em>reactive</em><em> </em><em>metal</em><em>.</em><em>i</em><em>t</em><em> </em><em>i</em><em>s</em><em> </em><em>the</em><em> </em><em>memb</em><em>er</em><em> </em><em>of</em><em> </em><em>alkali</em><em> </em><em>me</em><em>tal</em><em> </em><em>fami</em><em>ly</em><em> </em><em>abo</em><em>ut</em><em> </em><em>the</em><em> </em><em>perio</em><em>dic</em><em> </em><em>table</em><em> </em><em>.</em><em>it</em><em> </em><em>has</em><em> </em><em>one</em><em> </em><em>electron</em><em> </em><em>in</em><em> </em><em>the</em><em> </em><em>outer</em><em>most</em><em> </em><em>electron</em><em> </em><em>shel</em><em>l</em><em>.</em>

Explanation:

Hope it's help !

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PH = -log[H3O+]
Solving for [H3O+] gives
[H3O+] = 10^-pH
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3 years ago
Which one is a transferable type of energy?
kipiarov [429]

Answer:

E. Kinetic

Explanation:

Kinetic Energy. Energy is transferred from one object to another when a reaction takes place. Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few. For the blue ball to move to the position of the green ball, energy must be given to the blue ball.

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2. Barium compounds are chemically very similar to strontium compounds. Water-soluble
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The ability of sodium sulfate to act as an antidote to barium chloride poisoning is because displaces barium in barium chloride to form sodium chloride and insoluble harmless barium sulfate.

<h3>Why is a solution of sodium sulfate used as an antidote?</h3>

The ability of sodium sulfate to act as an antidote to barium chloride poisoning is because of the reactivity of sodium.

Sodium is a more reactive metal than barium, so it displaces barium in barium chloride to form sodium chloride and insoluble harmless barium sulfate.

The equation of the reaction is given below:

  • BaCl2 + Na2SO4 ----> BaSO4 + NaCl

Therefore, the ability of sodium sulfate to act as an antidote to barium chloride poisoning is because displaces barium in barium chloride to form sodium chloride and insoluble harmless barium sulfate.

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6 0
2 years ago
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What is the true ratio of atoms in a molecule or formula unit called?
miskamm [114]

The true ratio of atoms in a molecule or formula unit is called molecular formula

<h3>What is empirical formula?</h3>

This is the simplest formula that shows the ratio of the different atoms present in a compound.

<h3>What is molecular formula?</h3>

This is the formula of a compound which gives the true or actual ratios of the different atoms present in a compound

<h3>What is molar mass?</h3>

The molar mass of a compound is defined as the sum total of the molar masses of the different atoms present in the compound.

<h3>What is percentage composition?</h3>

This gives the proportion of the different atoms present in a compound.

From the above definitions, we can conclude that the correct answer to the question is molecular formula

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8 0
2 years ago
How many grams of magnesium oxide are formed if 20.9 grams of Mg and 15.2 g of O2 react.
anyanavicka [17]

Answer:

Mass of magnesium oxide formed = 35.1 g

Explanation:

Given data:

Mass of Mg = 20.9 g

Mass of O₂ = 15.2 g

Mass of magnesium oxide formed = ?

Solution:

Chemical equation:

2Mg + O₂     →   2MgO

Number of moles of Mg:

Number of moles = mass/molar mass

Number of moles = 20.9 g/ 24 g/mol

Number of moles = 0.87 mol

Number of moles of O₂:

Number of moles = mass/molar mass

Number of moles = 15.2 g/ 32 g/mol

Number of moles = 0.475 mol

Now we will compare the moles of MgO with magnesium and oxygen.

                Mg          :         MgO

                  2           :           2

                0.87        :         0.87

                  O₂         :         MgO

                     1         :            2

                   0.475   :        2/1×0.475 = 0.95  

Number of moles of MgO formed by Mg are less thus Mg will limiting reactant.

Mass of MgO:

Mass = number of moles × molar mass

Mass = 0.87 mol × 40.3 g/mol

Mass = 35.1 g

                 

6 0
3 years ago
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