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
Andreas93 [3]
3 years ago
12

a piece of metal is heated to 100℃ and placed into 75.0g of water in a coffee-cup calorimeter. Initially, the temperature of the

water in the calorimeter was 23.1℃. The final temperature of he system was 30.6℃. What is the mass of the piece of metal? The specific heat of the water is 4.184 J/g℃. The specific heat of the metal is 0.900J/g℃.
Chemistry
1 answer:
Jet001 [13]3 years ago
4 0

Answer:

The mass of this piece of metal is 37.68g

Explanation:

<u>Step 1:</u> Given data

q = m*ΔT *Cp

⇒with m = mass of the substance

⇒with ΔT = change in temp = final temperature T2 - initial temperature T1

⇒with Cp = specific heat (Cpwater = 4.184J/g °C) (Cpmetam = 0.9J/ g °C)

<u>Step2 : </u>

For this situation : we get for q = m*ΔT *Cp

q(lost, metal) = q(gained, water)

- mass of metal(ΔT)(Cpmetal) = mass of water (ΔT) (Cpwater)

-m (30.6 -100) * 0.9 = 75g *( 30.6 - 23.1) * 4.184J / g °C

-m * (-69.4) * 0.9 = 75g * (7.5) * 4.184J / g °C

-m * (-69.4) *0.9 = 2353.5

-m = 2353.5 / (-69.4 *0.9) = -37.68

m = 37.68g

The mass of this piece of metal is 37.68g

You might be interested in
How is the concept of heat related to the kinetic molecular theory and the law of conservation of energy?
Slav-nsk [51]
The first law states that the total increase in the energy of a system is equal to the increase in thermal energy, meaning that heat is a form of energy and is therefore subject to the the principle of conservation
7 0
2 years ago
What ionic bond occurs between what particles?
Sladkaya [172]
B positive and negative ion 
4 0
3 years ago
Why are questions about philosophy religion not able to be answered through scientific inquiry be specific and use examples to s
hodyreva [135]
Philosophy bar for CE koala bear nuts
4 0
2 years ago
11)
loris [4]

Answer:

b) Industrial farming

Explanation:

The term “industrial agriculture” refers to the type of farming which raises and cultivates large numbers of livestock and plants in high-density environments. It uses modern technology to promote faster growth and reduce illness and death rates in livestock, creating food products on a mass scale.

4 0
2 years ago
Read 2 more answers
30.04
liq [111]

200 moles of nitric acid.

Explanation:

We have the following chemical equation:

3 NO₂ + H₂O → 2 HNO₃+ NO

Taking in account the chemical equation, we devise the following reasoning:

if        3 moles of nitric dioxide (NO₂) produce 2 moles of nitric acid (HNO₃)

then  300 moles of nitric dioxide (NO₂) produce X moles of nitric acid (HNO₃)

X = (300 × 2) / 3 = 200 moles of nitric acid.

Learn more about:

number of moles

brainly.com/question/14200188

brainly.com/question/14128068

#learnwithBrainly

4 0
3 years ago
Other questions:
  • he standard enthalpies of formation for S (g), F (g), SF4 (g), and SF6 (g) are +278.8, +79.0, -775, and -1209 kJ per mole, respe
    13·1 answer
  • Ni2+(aq) + 6 NH3(aq) ⇌ Ni(NH3)6 2+(aq)
    10·1 answer
  • Calculate the mass in grams of each sample.
    15·1 answer
  • TIMED TEST PLS HELP (will give BRAINLIEST) According to some scientists, which is a cause of global warming? PICK ONLY ONE A) de
    9·2 answers
  • 2) A wooden block has a volume of 176 cm3 and a density of 18.2 g/ cm3. What is the mass?
    14·1 answer
  • Can you pls tell me the net ironic equation of H₂²⁺(aq) + O₂²⁻(aq) + Mg²⁺(aq) + SO₃²⁻(aq) → Mg²⁺(aq)+SO²⁻₄(aq) + H₂O(l)
    12·1 answer
  • I need help with this question <br> I will give brainliest if you get it right
    15·1 answer
  • What are the possible phenotypes of the offspring?
    11·2 answers
  • Which is stronger- the attractive forces between water molecules and chromium and chloride ions, or the combined ionic bond stre
    9·1 answer
  • Bicarbonato es metal o no?​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!