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3 years ago

What did Rutherford discover that Thomson did not understand?

Chemistry

1 answer:

mixer [17]3 years ago

6 0

Answer:

Explanation:

D. That most of an atom's mass was packed in a central nucleus

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*Asap*

ira [324]

Answer:

(a).

$order \: of \: A = 2 \\ order \: of \:B = 0 \\ rate = k[A] {}^{2} [B]$

(b)

$0.32 \times {10}^{ - 3} = k {(0.12)}^{2} (0.15) \\ k = 0.148 \: {mol}^{ - 2} {dm}^{6} {s}^{ - 1}$

(c). The rate increases because kinetic energy of reactant molecules increases.

7 0

3 years ago

What basic law of chemical reactions do nuclear reactions break

zhuklara [117]

The law conservation of mass, because part of the mass can be converted into energy
also, the elements are changing during nuclear reactions, new elements are formed

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3 years ago

Enter your answer in the provided box. Before arc welding was developed, a displacement reaction involving aluminum and iron(III

Likurg_2 [28]

Answer:

grams of iron = 2262.4 g

Explanation:

The balanced chemical equation should be represented first.

2Al + Fe2O3 → Al2O3 + 2Fe

find the limiting reactants by converting to moles.

covert 1.64 kg to grams = 1640 g

moles = mass/molar mass = 1640/27 = 60.7407407407 moles

60.7407407407 × 1 mol-rxn /2 = 30.37 mol-rxn

The limiting reactant is Fe2O3 Therefore it will determine the yield of Iron

2Al + Fe2O3 → Al2O3 + 2Fe

molar mass of Fe2O3 = 56 × 2 + 16 × 3 = 112 + 48 = 160 g

atomic mass of iron = 56

mass of iron in the reaction = 56 × 2 = 112 g

moles = mass/molar mass

mass = moles × molar mass

mass = 20.2 × 160 = 3232 g

if 160 g of Fe2O3 give 112 g of iron

3232 g of Fe2O3 will give ? grams of iron

grams of iron = 3232 × 112/ 160

grams of iron = 361984 /160

grams of iron = 2262.4 g

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3 years ago

Name a difference between a volvox and paramecium? plz help

Andrews [41]

Volvox and paramecium live in the same living conditions. The visible difference between volvox and paramecium is the shape. <span>Volvox is rounded, while paramecium is lying</span>.

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3 years ago

What is atom economy?

Inessa [10]

Answer:

Atom economy is the conversion efficiency of a chemical process in terms of all atoms involved and the desired products produced

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3 years ago