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Tems11 [23]
3 years ago
9

Scientific evidence is most likely to be consistent if it is based on data from

Chemistry
2 answers:
ladessa [460]3 years ago
6 0

Answer:

Random samples

Explanation:

It needs to be random so that there isn't bias that would skew the consistency

tamaranim1 [39]3 years ago
5 0

Answer:

A

Explanation:

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The taste of sour milk is lactic acid. What is the molecular formula for lactic acid if the percent composition is 40.00% C, 6.7
Svetradugi [14.3K]

Answer:

C3H6O3

Explanation:

To find the emperical of the compound,you divide the percentage composition of each element by it's molar mass(C=12, H=1, O=16).

For C,40/12=3.33. For H,6.71/1=6.71

For O,53.19/16=3.33.

Then divide everything by the smallest value which is 3.33

For C,3.33/3.33=1. For H,6.71/3.33=~2.

For O,3.33/3.33=1.

Emperical formula=CH2O

Molecular formula=(CH2O)n=90

(12+2*1+16)n=90

30n=90, n=3

molecular formula=(CH2O)3

molecular formula of lactic acid=C3H6O3.

4 0
3 years ago
PROJECT: KITCHEN TOOLS
docker41 [41]

Answer:

Explanation:2+2=4

7 0
3 years ago
What would diluting the vinegar do to the rate of a reaction between vinegar and sodium hydroxide? decrease the rate of reaction
GarryVolchara [31]
Vinegar is aceti acid diluted in water.

The reaction of vinegar with sodium hydroxide is:

CH3COOH + NaOH ---> CH3COONa + H2O

That is an acid-base reaction.

The speed of reaction is proportional to the concentrations of the reactants.

Then, given thatn when you dilute the vinegar you decrease the concentration of CH3COOH, the rate of reaction will decrease.

Answer: decrease the rate of reaction.


4 0
3 years ago
How would you obtain pure sugar from a mixture of sugar, charcoal, and copper?
beks73 [17]
Pure sugar can be obtained from sugar solution by the process of crystallization. It involves heating which leads to evaporation of water to make the solution saturated. The saturated solution when left undisturbed convert to pure crystals of the sugar.
5 0
1 year ago
One of the many remarkable enzymes in the human body is carbonic anhydrase, which catalyzes the interconversion of carbon dioxid
natka813 [3]

Answer:

Enzyme is carbonic anhydrase

Substrate is CO_2

Turnover number is 10^{7}

Explanation:

An enzyme is used by a living organism as a catalyst to perform a specific biochemical reaction.

A substrate is a molecule upon which an enzyme acts.

Turnover number refers to the number of substrate molecules transformed by a single enzyme molecule per minute. Here, the enzyme is the rate-limiting factor.

Here,

Enzyme is carbonic anhydrase

Substrate is CO_2

Turnover number is 10^{7}

8 0
3 years ago
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