1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vlabodo [156]
3 years ago
11

A 32.2 g iron rod, initially at 21.9 C, is submerged into an unknown mass of water at 63.5 C. in an insulated container. The fin

al temperature of the mixture upon reaching thermal equilibrium is 59 2 C What is the mass of the water? Express your answer to two significant figures
Chemistry
1 answer:
lorasvet [3.4K]3 years ago
3 0

Answer : The mass of the water in two significant figures is, 3.0\times 10^1g

Explanation :

In this case the heat given by the hot body is equal to the heat taken by the cold body.

q_1=-q_2

m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)

where,

c_1 = specific heat of iron metal = 0.45J/g^oC

c_2 = specific heat of water = 4.18J/g^oC

m_1 = mass of iron metal = 32.3 g

m_2 = mass of water = ?

T_f = final temperature of mixture = 59.2^oC

T_1 = initial temperature of iron metal = 21.9^oC

T_2 = initial temperature of water = 63.5^oC

Now put all the given values in the above formula, we get

32.3g\times 0.45J/g^oC\times (59.2-21.9)^oC=-m_2\times 4.18J/g^oC\times (59.2-63.5)^oC

m_2=30.16g\approx 3.0\times 10^1g

Therefore, the mass of the water in two significant figures is, 3.0\times 10^1g

You might be interested in
Si 72g de magnesio se combinan exactamente con 48g de oxígeno para formar óxido de magnesio ¿cuantos gramos de óxido de habrán f
Stella [2.4K]

Explanation: 40Gram

7 0
3 years ago
Suppose you had 1.0 mol samples the following gases at STP. If the volume of each of the samples of gas was reduced to one tenth
Leokris [45]
A.He
because He 's molecular weight is small than each other

4 0
4 years ago
Read 2 more answers
A scientist wants to study the diversity of soil bacteria found during different months of the year A.what is her independent va
OLEGan [10]

Answer:

No se ingles te ayudaria pero no entiendo nada

3 0
3 years ago
for the reaction shown compute the theoretical yield of product in moles each of the initial quantities of reactants. 2 Mn(s)+3
Y_Kistochka [10]

Answer:

2 mole MnO₂

Explanation:

2Mn(s) + 2O₂(g) => 2MnO₂(s)

4 0
3 years ago
Read 2 more answers
Which of the following elements has the largest atomic radius?
Pachacha [2.7K]

Answer:

nitrogen

Explanation:

as the group number increases, the atomic radius decreases

3 0
3 years ago
Other questions:
  • Name two elements that have properties similar to those of beryllium and have average atomic masses higher than 130
    6·1 answer
  • Consider the incomplete reaction below.
    5·1 answer
  • What volume (in L) of a 2.46 M.
    10·1 answer
  • Rank the following groups in terms of their priority according to the Cahn-Ingold-Prelog system of priorities. Give the highest
    6·1 answer
  • How many moles of MgS2O3 are in 205 g of the compound?
    10·2 answers
  • Subjective questions
    9·1 answer
  • Substance X has a specific heat capacity that is twice as large as Substance Y. If both samples ended up at the same change in t
    6·1 answer
  • Can someone help me with this question pls?
    8·1 answer
  • Can the components of a solution be separated using heat energy to<br> create phase changes?
    11·1 answer
  • Brock wants to see a full cycle of one high tide to the next. About how long will Brock have to wait?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!