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adell [148]
3 years ago
15

What do you understand by a chemical reaction

Chemistry
1 answer:
netineya [11]3 years ago
7 0

Answer:

A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. ... A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.

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What is the ph for hcl and ch3cooh?
Maurinko [17]
HCL - 3.01
CH3COOH -2.4
5 0
4 years ago
In the periodic table atoms are arranged from left to right and from top to bottom in which order
spin [16.1K]
<span>The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom inorder of increasing atomic number.


</span>
5 0
4 years ago
If 16.8 mL of the analyte H2C2O4 (oxalic acid) is titrated with 0.501 M KOH to 13.54 mL, determine the mass of the analyte.​
Neko [114]

Answer:

Mass of Analyte H2C2O4 = 18.18 grams

Explanation:

The balanced equation is:

H_{2}C_{2}O_{4}+2KOH\rightarrow K_{2}C_{2})_{4}+H_{2}O

The Molarity of Oxalic acid needed can be determined using:M_{1}V_{1}=M_{2}V_{2}

Here M1 = Molarity of Oxalic acid

V1 = Volume of oxalic acid

M2 = Molarity of KOH and V2 = Volume of KOH

M1 = ? , V1 = 16.8 mL , M2 = 0.501 M   ,  V2 = 13.54 mL

Put the values and solve for M2,

M_{1}V_{1}=M_{2}V_{2}

2\times M_{1}(16.8)=0.501\times 13.54

We are multiplying by 2 because , 1 H2C2O4 needs 2 KOH

M_{1}=\frac{0.501\times 13.54}{2\times 16.8}

M_{1}=0.202M

Hence Molarity of H2C2O4 =

0.202 M

Molar mass = H2C2O4 = 2x1 +2x12 + 4x16

= 2+24+64 =  90 gram

Mole =molarity\times Molar\ mass

Moles=0.202\times 90

18.18 gram

8 0
3 years ago
Many metals react with oxygen gas to form the metal oxide. for example, calcium reacts as follows. 2 ca(s) + o2(g) → 2 cao(s) yo
aniked [119]
<span>(a) Assuming the amount of O2(g) is not limiting the reaction, a mass of 4.23g of Ca(s) will produce an equal mass of CaO(s), hence it will produce 4.23g of CaO(s). According to their respective molar masses, we have the following CaO molar mass : Molar mass of Ca + Molar mass of O = 40.1 + 16 = 56.1 g/mol 4.23g of Ca will then produce : 4.23 / 56.1 = 0,07540107 mol of CaO. (b) With the same reasonment as above, and assuming the amount of Ca is not limiting, we have : 2.87g of O2 will produce : 2.87 / 56.1 = 0,051158645 mol of CaO. (c) From (a) and (b) answers, we can conclude that the reactant that produces less mol of CaO is limiting the reaction. Hence following the given masses, O2 is the limiting reactant. (d) Knowing the molar mass of CaO is 56.1 g/mol and knowing that O2 is the limiting reactant, we also know the reaction can produce a maximum of 0,051158645 mol of CaO can be produced. So we can conclude we will produce : 56.1 * 0,051158645 = 2.87g of CaO.</span>
8 0
4 years ago
Logically why all atoms are electrically neutral ?​
daser333 [38]

ANSWER

An atom of element is electrically neutral because the number of positive protons are equal to number of negative electrons.

7 0
4 years ago
Read 2 more answers
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