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Reptile [31]
3 years ago
11

What is the tool used for measuring volume?

Chemistry
1 answer:
RoseWind [281]3 years ago
4 0

Answer:

Liquid volume is usually measured using either a graduated cylinder or a buret. As the name implies, a graduated cylinder is a cylindrical glass or plastic tube sealed at one end, with a calibrated scale etched (or marked) on the outside wall.

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If the volume of an object increases but the mass stays the same, which will happen to the density?
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We all know, Density = Mass/ volume. When volume increases and the mass remains the same , the density will decrease considerably.
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Identify the compound with the highest standard free energy of formation. identify the compound with the highest standard free e
Anestetic [448]
The compound with the highest standard free energy of formation is O3(g)


7 0
3 years ago
TIMED EXAM URGENT
vlabodo [156]

Answer:

2 s 3 s

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Coz they on the spdf

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How much heat is absorbed/released when 25.00 g of NH3(g) reacts in the presence of excess O2(g) to produce NO(g) and H2O(l) acc
Novay_Z [31]

Answer:

429.4 kJ are absorbed in the endothermic reaction.

Explanation:

The balanced chemical equation tells us that 1168 kJ of heat are absorbed in the reaction when 4 mol of NH₃ (g) react with 5 mol O₂ (g).

So what we need is to calculates how many moles represent 25 g NH₃(g) and calculate the heat absorbed. (NH₃ is the limiting reagent)

Molar Mass NH₃  = 17.03 g/mol

mol NH₃ = 25.00 g/ 17.03 g/mol = 1.47 mol

1168 kJ /4 mol NH₃  x 1.47 mol  NH₃ =  429.4 kJ

6 0
3 years ago
Need help figuring out these questions did I do them right
Bas_tet [7]

Answer:

The answer to your question is: more less

Explanation:

I suggest you these answers:

a)     PCl₅ (s)     ⇒    PCl₃ (s)  + Cl₂ (g)

b)  ZnBr₂ (aq) + Li₃CO₃ (aq)  ⇒  ZnCO₃ (s)  + LiBr (aq)

c) C₂H₄  + O₂   ⇒    CO₂ (g) + H₂O (l)

Do you have to balance them?

8 0
3 years ago
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