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
Cerrena [4.2K]
3 years ago
9

use the gizmos to mix 200 G of copper at 100 C with 1000 g of water at 20 C whatis the final temperature

Chemistry
1 answer:
ziro4ka [17]3 years ago
5 0

Answer:

Explanation:

mass of copper = 200 g at temperature 100°C

mass of water = 1000 g at 20⁰C

Let the final temperature be T .

specific heat of copper = .385 J per gram

specific heat of water = 4.182 J per gram

heat lost = mass x specific heat x fall of temperature

heat lost by copper

= 200 x .385 x ( 100 - T )

heat gained by water

= 1000 x 4.182 x ( T - 20 )

heat lost by copper = heat gained by water

200 x .385 x ( 100 - T )  = 1000 x 4.182 x ( T - 20 )

7700 - 77 T = 4182 T - 83640

4259 T  = 91340

T = 21.44⁰C .

You might be interested in
How can we reduce the production of harmful gases that form acid rain
oksano4ka [1.4K]

Answer:

A great way to reduce acid rain is to produce energy without using fossil fuels. Instead, people can use renewable energy sources, such as solar and wind power. Renewable energy sources help reduce acid rain because they produce much less pollution.

7 0
3 years ago
1. When frequency increases energy:
liraira [26]
B

When frequency increases, as does the energy, but wavelength decreases. It also works vise versa; if wavelength were to increase, its frequency and energy will decrease.
8 0
3 years ago
Consider the reaction between reactants s and o2: 2s(s)+3o2(g)→2so3(g)if a reaction vessel initially contains 7 mols and 9 mol o
nadya68 [22]

Answer: -

1 mol

Explanation: -

Number of moles of Sulphur S = 7

Number of moles of O2 = 9

The balanced chemical equation for the reaction is

2S (s)+3 O2 (g)→2SO3(g)

From the above reaction we can see that

3 mol of O2 react with 2 mol of S

9 mol of O2 will react with \frac{2 mol S x 9 mol O2}{3 mol O2}

= 6 mol of S

Unreacted S = 7 - = 1 mol.

If a reaction vessel initially contains 7 mol S and 9 mol O2

1 mole of s will be in the reaction vessel once the reactants have reacted as much as possible

6 0
4 years ago
Find the empirical formula of the following compound: 0.77 mol of iron atoms combined with 1.0 mol of oxygen atoms.
eimsori [14]

The empirical formula is Fe₃O₄.

The empirical formula is the <em>simplest whole-number ratio of atoms</em> in a compound.

The ratio of atoms is the same as the ratio of moles, so our job is to calculate the molar ratio of Fe to O.

I like to summarize the calculations in a table.

<u>Element</u>   <u>Moles</u>    <u>Ratio</u>¹   <u>×3</u>²   <u>Integers</u>³

    Fe         0.77       1         3             3

    O           1.0         1.3      3.9          4

¹ To get the molar ratio, you divide each number of moles by the smallest number (0.77).

² If the ratio is not close to an integer, multiply by a number (in this case, 3) to get numbers that are close to integers.

³ Round off these numbers to integers (3 and 4).

The empirical formula is Fe₃O₄.

7 0
3 years ago
What has the biggest impact on a region,weather or atmosphere.
andreev551 [17]

<em>Weather.</em>

<em>You see how the weather is in a certain place can determine how the plant life and just life in general would live. It can also effect people. Let's say there was a drought somewhere, this would effect people whereas, they could lose a significant source of water and food because it would make them likely have to find a new water source or the animals would. Weather also effects the land in harmful ways. For example when it floods, the ground gets muddy but can also get so muddy below a certain area, that the soil entirely collapses into the ground (that would be a sinkhole).</em>

<em>There are picture below to show you some of the effects.</em>

<em>-R3TR0 Z3R0</em>

5 0
3 years ago
Other questions:
  • In the compound potassium nitrate (KNO3), the atoms within the nitrate ion are held together with bonding, and the potassium ion
    8·1 answer
  • How many molecules are in 0.26 mol of CO2
    14·1 answer
  • Consider a reaction in which hydrogen (H2) and oxygen (O2) react to form water (H2O). By mass, the mixture of reactants is 1 par
    7·1 answer
  • What is the name of the functional group in the following compound
    5·2 answers
  • Table C: Known Specific Heat Values for Common
    8·2 answers
  • This HAS to be an answer for second graders<br><br><br>Where do different kinds of apples come from?
    6·2 answers
  • Which metallic substance would require the least amount of thermal energy to melt?
    5·2 answers
  • Physical reactions of carbonyl group​
    7·1 answer
  • Name this compound. Please help
    11·1 answer
  • Why is there a delay for the tides to react to the Moon's and Sun's gravitational effect?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!