Which is the electron configuration for zinc?

A piece of iron is heated to 95.0 celsius and then placed in an insulated vessel containing 250. grams of water at 25.0 celsius.

Nana76 [90]

Answer:

c) 387g

Explanation:

Water;

Mass = 250g

Specific heat = 4.184

Initial Temp, T1 = 25 + 273 = 298K

Final Temp, T2 = 35 + 273 = 308K

Heat = ?

H = mc(T2 - T1)

H = 250 * 4.184 (308 - 298)

H = 10460 J

Iron;

Initial Temp, T2 = 95 + 273 = 368K (Upon converting to kelvin temperature)

Mass = ?

Final Temp, T1 = 35 + 273 = 308

Heat = 10460 (Heat lost by iron is qual to heat gained by water)

Specific heat = 0.45

H = mc(T2-T1)

M = 10460 / [0.45 (308 - 368)]

M = 10460 / 27

M = 387g

7 0

3 years ago

What is the molarity of a solution made by dissolving 1.25 mol of HCl in enough

Ronch [10]

Answer:

Explanation:

C

4 0

3 years ago

Answer with explanation

creativ13 [48]

The answer should be:

KOH (aq) + HCl (aq) --> KCl (aq) + H20 (l).

KOH is a base, because OH can accept a H+.
HCl is an acid because it can donate a H+.

In general, bases are : OH-, and acids are : H+.

8 0

3 years ago

How many Earths will we need to have enough resources if the whole world lived like Americans?

Oxana [17]

Answer:

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Explanation:

because yeah

4 0

4 years ago

Read 2 more answers

Why brain remembers picture better than words?

mojhsa [17]

Answer:

your brain processes ever detail in a picture rather than words for for example a picture of something words doesn't describe it as well as the picture could.

5 0

2 years ago

Read 2 more answers