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4 years ago

Answer ASAP How do ethical concerns affect scientific research?

Chemistry

1 answer:

Vinvika [58]4 years ago

4 0

Answer:

Short answer is ethical concerns pose as limits.

Explanation:

As a scientist, one would want to research anything with limited possibilities. You would have to make sure however you're planning to test you hypothesis is safe for the environment (the people, the plants, the animals, and the earth in general)

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Which is the larger atom S or Mg

Vadim26 [7]

Answer:

Explanation:

If one were comparing just the neutral atoms Mg and S, the S atom would be smaller as both elements are in the same period and sulfur is more to the right

8 0

3 years ago

4. Thermal conduction works when two objects are in _______________ with each other. The _______________ energy of the molecules

Advocard [28]

Answer:

hajhsajjsha

Explanation:

4 0

3 years ago

The theoretical yield of NaBr from

Lapatulllka [165]

Taking into account definition of percent yield, the percent yield for the reaction is 100%.

<h3>Reaction stoichiometry</h3>

In first place, the balanced reaction is:

2 FeBr₃ + 3 Na₂S → Fе₂S₃ + 6 NaBr

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

FeBr₃: 2 moles
Na₂S; 3 moles
Fе₂S₃: 1 mole
NaBr: 6 moles

<h3>Moles of NaBr formed</h3>

The following rule of three can be applied: if by reaction stoichiometry 2 moles of FeBr₃ form 6 moles of NaBr, 2.36 moles of FeBr₃ form how many moles of NaBr?

$moles of NaBr=\frac{2.36 moles of FeBr_{3}x6 moles of NaBr }{2 moles of FeBr_{3}}$

moles of NaBr= 7.08 moles

Then, 7.08 moles of NaBr can be produced from 2.36 moles of FeBr₃.

<h3>Percent yield</h3>

The percent yield is the ratio of the actual return to the theoretical return expressed as a percentage.

The percent yield is calculated as the experimental yield divided by the theoretical yield multiplied by 100%:

$percent yield=\frac{actual yield}{theorical yield}x100$

where the theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.

<h3>Percent yield for the reaction in this case</h3>

In this case, being the molar mass of NaBr 102.9 g/mole, you know:

actual yield= 7.08 moles× 102.9 g/mole= 728.532 grams
theorical yield= 7.08 moles× 102.9 g/mole= 728.532 grams

Replacing in the definition of percent yields:

$percent yield=\frac{728.532 grams}{728.532 grams}x100$

Solving:

<u><em>percent yield= 100%</em></u>

Finally, the percent yield for the reaction is 100%.

Learn more about

the reaction stoichiometry:

brainly.com/question/24741074

brainly.com/question/24653699

percent yield:

brainly.com/question/14408642

#SPJ1

8 0

2 years ago

Help please ASAP I’ll mark you as brainlister

noname [10]

Answer: FeO is called ferrous oxide while Fe2O3 is ferric oxide

Explanation:

Ferrous oxide, commonly known as iron(II) oxide contains iron that lost 2 elections in the oxidation process. So it is able to bond with other atoms that have an extra 2 electrons to share. Ferric oxide, is commonly known as iron(III) oxide

8 0

3 years ago

Hexane is a common laboratory solvent and a component of petrol. Its combustion reaction is as follows: 2 C6H14 (9) + 19 02(9) +

Flauer [41]

Answer : The heat released by the combustion of 1.121 mol of hexane (kJ) is, $1.01\times 10^3$

Explanation :

The given balanced reaction is,

$2C_6H_{14}(g)+19O_2(g)\rightarrow 12CO_2(g)+14H_2O(l)$

Given:

Moles of hexane = 0.121 mol

$\Delta H$ = -8326 kJ/mol

The negative sign indicate that the reaction exothermic or amount of heat released.

As, 1 mole of hexane released heat = 8326 kJ

So, 0.121 mole of hexane released heat = 8326 × 0.121 = 1007.446 ≈ $1.01\times 10^3kJ$

Therefore, the heat released by the combustion of 1.121 mol of hexane is $1.01\times 10^3kJ$ .

4 0

4 years ago