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steposvetlana [31]

3 years ago

13

Who was charles darwin

2 answers:

ss7ja [257]3 years ago

7 0

Here are some facts about Charles Darwin:

.Born Feb 12, 1809
.Died April 19, 1882
.He was famous for natural selection
.He was knower as the father of evolution
.Charles Darwin Influenced the Early History of Psychology

Charles Darwin was knower for the theory of evolution about birds and natural selection he did expierment on dead birds because the same birds had a different shape of beak from each other and that's were he came up with the theory of evolution about the birds and their beaks.

Verdich [7]3 years ago

5 0

Charles Darwin was a Geologist, biologist and is best known for his contributions to science of evolution.

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Well, we might as well try a similar question. Magnesium metal reacts with hydrochloric acid to produce hydrogen gas and an aque

Andrei [34K]

Answer: Magnesium Mg

Explanation:

Oxidization is the process by which a substance either gains oxygen or losses electrons.

The chemical reaction of the above is denoted by,

Mg(s) + 2HCl(aq) -----> MgCl2(aq) + H2(g)

Mg went from a 0 to a +2 state which would mean that it lost electrons.

It was therefore oxidized.

Please do react or comment if you need clarification or if the answer helped you. This can help other users as well. Thank you.

5 0

3 years ago

Isotopes of the same element have the same number of ________ and a different number of _____.

vovangra [49]

<span>C.) Protons, neutrons. Hope it helps :)</span>

5 0

2 years ago

Read 2 more answers

Which pH indicates a substance that is more acidic than a substance with a pH of 4

dexar [7]

Anything with a pH level of 3, 2, or 1.

8 0

3 years ago

The chemical equation below shows the amount of the reactants used and the amount of only one of the products formed. How much w

Karolina [17]

Answer:

CH4 + 2O2 → CO2 + 2H2O

Explanation:

This is all i could come up with im sorry.

6 0

2 years ago

When methanol, CH 3 OH , is burned in the presence of oxygen gas, O 2 , a large amount of heat energy is released. For this reas

luda_lava [24]

<u>Answer:</u> The mass of methanol that must be burned is 24.34 grams

<u>Explanation:</u>

We are given:

Amount of heat produced = 581 kJ

For the given chemical equation:

$CH_3OH(g)+\frac{3}{2}O_2(g)\rightarrow CO_2(g)+2H_2O(l);\Delta H=-764kJ$

By Stoichiometry of the reaction:

When 764 kJ of heat is produced, the amount of methanol reacted is 1 mole

So, when 581 kJ of heat will be produced, the amount of methanol reacted will be = $\frac{1}{764}\times 581=0.7605mol$

To calculate mass for given number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Moles of methanol = 0.7605 moles

Molar mass of methanol = 32 g/mol

Putting values in above equation, we get:

$0.7605mol=\frac{\text{Mass of methanol}}{32g/mol}\\\\\text{Mass of methanol}=(0.7605mol\times 32g/mol)=24.34g$

Hence, the mass of methanol that must be burned is 24.34 grams

4 0

3 years ago