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
kirza4 [7]
3 years ago
5

A 45.7 block of an unknown metal at 74.2 °C is placed in 72.9 g of water at 15.9 °C. If the

Chemistry
1 answer:
g100num [7]3 years ago
3 0

Answer:

0.934J/g°C

Explanation:

Using Q = mc∆T

However, in this question;

(Q)water = -(Q)metal

(mc∆T)water = -(mc∆T)metal

According to the information provided in the question;

For water;

m = mass = 72.9g

c = specific capacity of water = 4.184 J/g°C

∆T = 22.9 - 15.9 = 7°C

For metal;

m = mass = 45.7g

c = specific capacity of water = ?

∆T = 22.9 - 72.9 = -50°C

(mc∆T)water = -(mc∆T)metal

(72.9 × 4.184 × 7) = -(45.7 × c × -50)

2135.0952 = -(-2285c)

2135.0952 = 2285c

c = 2135.0952/2285

c of metal = 0.934J/g°C

You might be interested in
Bisphenol-A (BPA) is a compound found in many plastics. Under certain circumstances, BPA leaches out of the plastic and is inges
saveliy_v [14]
BPA is estrogenic and an endocrine disruptor.
3 0
3 years ago
Read 2 more answers
Sugar when dissolved into water, propose whether the compound forms atoms, molecules or lattices. Justify you answer
kirza4 [7]

Answer:

atoms

Explanation:

for sugar to dissolve in water hydaration must be equal to or greater than the lattice energy or molecular forces so when the molecular forces breaks new atoms are formed for recombination in new compound

6 0
3 years ago
Which statement best reflects a change in weather ?
earnstyle [38]
The answer would be, "Today is cloudy, but tomorrow will be clear and sunny." The rest are examples of climate change, which is spanned over 30+ years, weather is on a day-to-day basis
6 0
3 years ago
How to test for carbon dioxide ​
Kaylis [27]

Answer:  carbon dioxide detector

6 0
3 years ago
Read 2 more answers
TIME REMAINING 52:03 Considering the activity series given below for metals and nonmetals, which reaction will occur?
Luden [163]

Answer:

2NaBr + I2 Right arrow. 2NaI + Br2

2AgNO3 + Ni Right arrow. Ni(NO3)2 + 2Ag

Explanation:

The activity or electrochemical series is an arrangement of elements according to their order

of reactivity.

If we look at the reactions, one thing that we must note is that the reactions that can occur are those in which an element that is higher in the series displaces another element that is lower in the series.

Br is higher in the electrochemical series than I so it can displace it. Ni is higher than Ag in the electrochemical series hence it can displace it.

7 0
3 years ago
Read 2 more answers
Other questions:
  • Rozwiaz logogryf. Z wyróżnionych pól odczytaj hasło i je zapisz.
    12·1 answer
  • The following three equations represent reactions done in this lab exercise. Classify each reaction by their type. Note there ma
    6·1 answer
  • Describe why corrosion is a natural process
    12·1 answer
  • Story that ends in i have never found such a kind person ever since ​
    9·1 answer
  • Calculate the molecular mass of iron (Ill) oxide (Fe,O3)
    11·1 answer
  • HELP PLS HELP i rlly need help omg
    15·1 answer
  • How many valence electrons are found in a neutral atom of arsenic?
    9·1 answer
  • balance the following equation by oxidation number method KMnO4 + Na2So3 gives Mno2 + Na2 So4 + Koh​
    15·1 answer
  • Explain Wurtz reaction with an example ~​
    14·1 answer
  • Write a balanced equation for the reaction of Zn(H₂O)₄²⁺ in aqueous NaCN.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!