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2 years ago

BALANCE THE FOLLOWING EQUATION

Chemistry

1 answer:

Musya8 [376]2 years ago

4 0

Answer:

1) Sc(C2H3O2)3 + Na3BO3 = 3 NaC2H3O2 + ScBO3

2) 2 Ba3(PO4)2 + 3 Ca2SiO4 = 3 Ba2SiO4 + 2 Ca3(PO4)2

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The age of water or wine may be determined by measuring its radioactive tritium(3H) content. Tritium, present in a steady state

notsponge [240]

Answer: 29.0 years

Explanation:

Expression for rate law for first order kinetics is given by:

$t=\frac{2.303}{k}\log\frac{a}{a-x}$

where,

k = rate constant

t = age of sample

a = let initial amount of the reactant

a - x = amount left after decay process

a) for completion of half life:

Half life is the amount of time taken by a radioactive material to decay to half of its original value.

$t_{\frac{1}{2}}=\frac{0.693}{k}$

$k=\frac{0.693}{12.5years}=0.0554years^{-1}$

b) for decomposition of 80 % of reactant

$t=\frac{2.303}{0.0554}\log\frac{100}{100-80}$

$t=\frac{2.303}{0.0554}\log\frac{100}{20}$

$t=29.0 years$

The age of a suspected vintage wine that is 20 % as radioactive as a freshlybottled specimen is 29.0 years

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2 years ago

Why aren't alkali metals found in pure form?

Llana [10]

It mostly because they're so reactive and if they were in their pure form and touched water they would have a very violent reaction. They also want to be more stable so they look for more electrons and quickly bond.

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3 years ago

What is the formula of titanium(II) oxide?(1) TiO (3) Ti2O(2) TiO2 (4) Ti2O3

ddd [48]

Hehe I love Titanium!! ;) Anyways, the chemical formula of titanium (II) Oxide is TiO

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3 years ago

Why alkali metals have low malting and bioling point

Arada [10]

Alkali metals have only one valence electron and so have low binding energy to the metallic crystal lattice. ... A lower amount of energy needed to break a bond means a lower melting/boiling point.

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3 years ago

14. Would you expect each of the following atoms to gain or lose electrons when forming ions ? what ion is the most likely in ea

yanalaym [24]

Answer:

The answer to your question is below

Explanation:

Metals lose electrons and Nonmetals gain them.

a. Ra is in group IIA it will lose electrons, the ion will be Ra⁺²

b. Br is in group VIIA it will gain electrons, the ion will be Br⁻¹

c. In is in group IIIA it will lose electrons, the ion will be In⁺³

d. Te is in group VIA it will gain electrons, the ion will be Te⁻²

e. Ca is in group IIA it will lose electrons, the ion will be Ca⁺²

f. As is in group VA it will gain electrons, the ion will be As⁻³

g. Al is in group IIlA it will lose electrons, the ion will be Al⁺³

h. Rb is in group IA it will lose electrons, the ion will be Rb⁺¹

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2 years ago