3 years ago

Students were asked to determine if the two slides are taken from plants or cells taken from animals

Chemistry

1 answer:

kramer3 years ago

7 0

Answer: taken from plants

Explanation:

because

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Sodium hydrogen carbonate NaHCO3, also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Ac

olga2289 [7]

Answer:

1.4952 grams of sodium bicarbonate she would need to ingest to neutralize this much HCl.

Explanation:

$Moles (n)=Molarity(M)\times Volume (L)$

Moles of hydrochloric acid = n

Volume of hydrochloric acid solution = 200.0 mL = 0.200 L

Molarity of the hydrochloric acid = 0.089 M

$n=0.089 M\times 0.200 L=0.0178 mol$ of HCL

$HCl(aq)+NaHCO_3(aq)\rightarrow NaCl(aq)+H_2O(l)+CO_2(g)$

According to reaction, 1 mole of HCl is neutralized by 1 mole of sodium bicarbonate.

Then 0.0178 moles of HCl wil be neutralized by :

$\frac{1}{1}\times 0.0178 mol=0.0178 mol$ of sodium bicarbonate

Mass of 0.0178 moles of sodium bicarbonate:

0.0178 mol × 72 g/mol = 1.4952 g

1.4952 grams of sodium bicarbonate she would need to ingest to neutralize this much HCl.

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How were weapons and utensils fashioned during the Stone Age

Alenkasestr [34]

They were created with stone and wood and sometimes even bones, I hope this helped!

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What is another name for a chemical change? A. chemical spill B. physical change C. physical property D. chemical reaction

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The correct answer is D. chemical reaction.

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What is in a microscope the enlarges things so our eye can see them?

Fittoniya [83]

Answer:lenses

Explanation:

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Isotopes Mg-24,Mg-25 and Mg-26 has natural abundance of 79.0%,10.0% and 11.0%. Calculate the relative atomic mass for isotopes M

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10% of Mg-25
11% of Mg-26

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