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NISA [10]
3 years ago
13

Can you look at the picture and tell me that answer ? Thank you

Chemistry
1 answer:
zepelin [54]3 years ago
3 0
The answer is choice (1).

In case you're interested in the solution for future reference:

-- Density = (mass) / (volume)

-- The scale shows that the mass of the sample is 60 grams.

-- The graduated cylinder has 24 mL in it <em>without</em> the sample.
The graduated cylinder has 34 mL in it <em>with</em> the sample.
The volume of the sample is (34mL - 24mL) = 10 mL .

-- Density = mass/volume = 60g / 10mL = 6 g/mL
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Why does hcl conduct electricity with water but not with chloroform
Yuliya22 [10]

Answer:

ions need to be present in the water. If there are no ions in solution, no electricity is conducted. since, in water, electricity is conducted, this means that HCl completely ionizes to H + and C l − ions. However, in chloroform, since there is no conduction, HCl does not ionize and stays as the

Explanation:

8 0
2 years ago
Calculate the standard molar enthalpy for the complete combustion of liquid ethanol (c2h5oh) using the standard enthalpies of fo
olga2289 [7]
Answer : To calculate the standard molar enthalpy of complete combustion of liquid ethanol can be done by using the formula given below;

C_{2}  H_{5}OH + 3O_{2} ----\ \textgreater \   2CO_{2}  + 3 H_{2}O

Now, the enthalpies of the elements in their standard state is zero always. 

So the H_{reaction} =  H_{products}  - H_{reactants}

Here we can avoid the heat of enthalpy of oxygen,carbon dioxide and water as they exists in their standard states.

So the H_{reaction} = H_{ C_{2}H_{5}OH}
6 0
3 years ago
Read 2 more answers
The value of the atomic mass of an atom is
Triss [41]
I’m going to say B:)
4 0
3 years ago
2. Calculate how many moles of H2 would be produced if 0.250 mol of Fe reacts completely. (1 mark)
den301095 [7]

Hey there!:

Balanced Equation , for the reaction:

3 H₂SO₄(aq) + 2 Fe(s) → Fe₂(SO₄)₃(aq) + 3 H₂(g)

2 moles Fe ---------------------------------- 3 moles H₂

0.250 moles Fe ---------------------------- ( moles H₂ ) ??

____________________________________________

moles H₂ = 0.250 × 3 / 2

moles H₂ = 0.75 / 2

moles = 0.375 moles of H₂

Hope this helps!

7 0
3 years ago
Reactions which do not continue to completion are called _____reactions
SIZIF [17.4K]
I think the answer is reversible. Reversible reaction is a kind of reaction which can react in both direction at the same time. And when the both side reactions get the same speed, the reaction is at a equilibrium state.
8 0
3 years ago
Read 2 more answers
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