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
Vika [28.1K]
2 years ago
9

an oven adds 2260 j heat to a zinc tray that weighs 195g of the tray starts at 25 what is the final temperature of the tray

Chemistry
2 answers:
inessss [21]2 years ago
7 0

Answer:  Assuming 25 is 25C, 54.9C

Explanation:  The specific heat of zinc is 0.388 J/gC.  With 195 grams, we see that for the whole tray, the temperature will change by 1 C for every 75.66J, since (0.388J/gC)*(195g) = 75.66 J/C.

Thus, (2260J)/(75.66J/C) = 29.9 C increase.  Add that to 25 to yield 54.9 C (or K, if the 25 was in Kelvin).

choli [55]2 years ago
5 0
Divide the grams by 25 to 195 then times it in decimal
You might be interested in
NEED HELP FAST!!
koban [17]

Answer:

I'm pretty sure that's right.

Explanation:

Download pdf
8 0
2 years ago
In Europe, gasoline efficiency is measured in km/L. If your car’s gas mileage is 25.0 mi/gal, how many liters of gasoline would
Deffense [45]

Answer:

V=23.5L

Explanation:

Hello,

In this case, it is convenient to compute the car's mileage in km/L as follows:

25.0\frac{mi}{gal}*\frac{1km}{0.6214mi}*\frac{1gal}{3.78L}=10.64\frac{km}{L}

In such a way, since the distance is measured to be 250 km, the volume requirement is:

V=\frac{250km}{10.64kg/L}\\ \\V=23.5L

Regards.

7 0
3 years ago
A molecule is made up of two or more chemically bonded atoms. true or false
Inessa05 [86]
True because molo means two so you would need more than 1 atom 
3 0
3 years ago
Which formula contains two non- metals?<br><br>BaO<br>NaBr<br>KI<br>Si O2​
Yakvenalex [24]
SiO2 is the only possible choice because the other formulas contain metals. how do we know this? because the other formulas contain elements located on the left of the “staircase” on the periodic table that separates metals from non-metals.
6 0
3 years ago
The change in enthalpy is the change in heat energy of a reaction and is calculated by (Hint: Hess' Law): Group of answer choice
Stolb23 [73]

Answer:

d. Sum of product enthalpies minus the sum of reactant enthalpies

Explanation:

The standard enthalpy change of a reaction (ΔH°rxn) can be calculated using the following expression:

ΔH°rxn = ∑n(products) × ΔH°f(products) - ∑n(reactants) × ΔH°f(reactants)

where,

ni are the moles of products and reactants

ΔH°f(i) are the standard enthalpies of formation of products and reactants

8 0
3 years ago
Other questions:
  • Name the product(s) of the complete combustion of any hydrocarbon.
    14·1 answer
  • What happens to the concentration as more solute is added?
    10·1 answer
  • What is the maxiumum volume of H2 gas at STP that can be produced when 14.0 g of CaH2 and 28.0 g H2O react?
    8·1 answer
  • What are 2 possible outcomes if a continental plate collides with another continental plate
    11·1 answer
  • Which element will have the greatest attraction for the calcium electrons?
    13·1 answer
  • Human diseases such as tetanus, syphilis, typhoid, and cholera are caused by small cells that lack a nucleus. These cells can en
    6·2 answers
  • Select the correct answer.
    8·2 answers
  • Regional Metamorphism occurs when great masses of rock are exposed to pressure. What does this typically form?
    7·1 answer
  • Cho biết độ tan của NH4Cl trong nước ở 20oC và 70oC lần lượt là 37,2 g/100 gam nước và 60,2 gam/100 g nước. Hòa tan 166,8 gam NH
    15·1 answer
  • 2. The two naturally occurring isotopes of hydrogen are hydrogen-1 ( 1.00783 amu; 99.9885 percent) and hydrogen-2 (2.01410 amu;
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!