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Amiraneli [1.4K]
3 years ago
5

When designing a experiment, a__________ is always needed to ensure you are able to compare.

Chemistry
2 answers:
kumpel [21]3 years ago
7 0
A model because of u make a mini model than u are designing the experiment and you can compare them.

Please give me brainliest!!!
siniylev [52]3 years ago
3 0

Answer:

hypothesis

Explanation:

i think

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Lavar el arroz y escurrirle el agua es un ejemplo de mezcla....
Tresset [83]

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me no oblo espenul

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2 years ago
How sulphuric acid react with Glucose ? Give reaction​
Ierofanga [76]

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Concentrated sulfuric acid can perform a dehydration reaction with table sugar. After mixing, the color changes from white to brownish and eventually to black. The expansion of the mixture is the result of vaporization of water and CO2 inside the container.

8 0
2 years ago
Read 2 more answers
Question 10
bixtya [17]
The reaction that should be followed is
Na2SO4 + C<span>a(NO3)2 --> CaSO4 + 2NaNO3</span>
first calculate the limiting reactant
mol Na2SO4 = 0.075 L (<span>1.54×10−2 mol / L) = 1.155x10-3 mol


mol Ca(NO3)2 = 0.075 L (</span><span>1.22×10−2 mol / L) = 9.15x10-4 mol
so the limiting reactant is the Ca(NO3)2

so all of the Ca2+ will be precipitated, percentage unprecipitated = 0.00 % </span>



5 0
3 years ago
Stem cells can differentiate into how many types of body cells?
s2008m [1.1K]
There are two main types of stem cell: embryonic stem cells and adult stem cells. Embryonic stem cells can develop into all the cells of the adult body. Adult stem cells come from an organ or tissue and can develop into specialized types of cell within the organ or tissue. Hope this helps! Mark brainly please!
6 0
3 years ago
Find molarity of 29.1 g LiClO4 · 3 H2O in 235 mL of solution
juin [17]

To find molarity

We need no.of moles and solution in liter

Given data is in grams and ml

We have to convert it in required units

For no.of moles use formula

No.of mole=mass in gram / molar mass

Mass in gram = 29.1g

Molar mass = 160.4374g/mol calculated by adding the atomic wight of all atoms in LiClO4.3H2O

Atomic weight

Li= 6.941

Cl= 35.453

O= 15.9994

H= 1.00794

Now put it in mol equation

No.of mole = 29.1/160.4374

= 0.181mol of solute

Now convert solution in L from ml

235ml = 235/1000 = 0.235L

Now put these values in molarity formula

Molarity= 0.181/0.235

= 0.77M solution

3 0
3 years ago
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