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Taya2010 [7]
3 years ago
6

Complete the conceptap below . About Chemical Bonds ​

Chemistry
1 answer:
Irina18 [472]3 years ago
5 0

Answer:

1. ionic bonds

2. metallic bonds

3. share

4. metal

5. non-metal

6. metals

7. NaCl ( sodium chloride )

8. CO2 ( carbon dioxide )

9. Cu ( copper )

<em>i</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helped</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em><em>.</em>

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A sample of tin (Cp = 0. 227 J/g•°C) is placed in a freezer. Its temperature decreases from 15. 0°C to â’10. 0°C as it rele
pshichka [43]

Taking into account the definition of calorimetry, the mass of the sample is 478.41 grams.

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

Sensible heat is defined as the amount of heat that a body absorbs or releases without any changes in its physical state (phase change).

So, the equation that allows to calculate heat exchanges is:

Q = c× m× ΔT

where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case, you know:

  • Q= -543 J because the energy is releases
  • c= 0.227 \frac{J}{gC}
  • m= ?
  • ΔT= Tfinal - Tinitial= 10 C - 15 C= -5 C

Replacing:

-543 J= 0.227 \frac{J}{gC}× m× (-5 C)

Solving:

m=\frac{-543 J}{0.227 \frac{J}{gC}x(-5 C)}

<u><em>m=478.41 grams</em></u>

In summary, the mass of the sample is 478.41 grams.

Learn more about calorimetry:

  • <u>brainly.com/question/11586486?referrer=searchResults </u>
  • <u>brainly.com/question/24724338?referrer=searchResults</u>
4 0
3 years ago
A neighborhood softball team has just welcomed a new player who is not fluent in English. What modifications might be appropriat
Klio2033 [76]
A moderator or translator to help the new player figure out what’s going on and how to communicate with everyone else. I hope that helps.
7 0
4 years ago
Read 2 more answers
A typical hydrogen peroxide solution from a drug store is labeled as 3.0% hydrogen peroxide. What is the other 97% of this compo
GarryVolchara [31]

Answer: Water

Explanation:

Chemically speaking, a solution has two components: solute and solvent.

The <u>solute</u> is that substance (usually solid, but it can also be liquid or gas) that dissolves in a liquid substance and <u>its proportion in the resulting solution is usually less than the solvent. </u>

The <u>solvent</u> is the substance used to <u>dissolve the solute, and generally its proportion in the resulting solution is greater.</u> Being the most common used  solvent water.

This means that in a solution there is usually more solvent than solute.

So, in the case of the hydrogen peroxide solution, since the proportion is 3\% to 97\%, the hydrogen peroxide is the solute and water is the solvent.

5 0
3 years ago
Which is the process by which a gas changes to a solid?
nikitadnepr [17]

Answer:

Deposition

Explanation:

I know this is correct because i just took the test JDHSGVDK

8 0
3 years ago
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What is the mass of 22.4 L of H2O at STP?
lord [1]
The  mass    of  22.4 L of  H2O    at  STP  IS    18.0  grams

      calculation

mass = moles x molar mas
Calculate  the   moles  of water  at  STP

At  STP   1  mole =22.4 L
what  about  22.4 l of  H2O

by  cross  multiplication


1mole  x22.4 L/22.4 L =  1 mole


molar mass  of water =  (1 x2) + 16  =18 g/mol

moles  is  therefore = 8 g/mol  x 1 mol  =  18   grams
6 0
3 years ago
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