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3 years ago

Please help with the last problem!

Chemistry

2 answers:

CaHeK987 [17]3 years ago

8 0

Radiation: Heat from the stovetop.
Conduction: Heat from Stove to Pot.
Convection: Water boiling.
I will now take my points.

Shtirlitz [24]3 years ago

4 0

Conduction: Heat from Stove to Pot.
Convection: Water boiling.
Radiation: Heat from the stovetop.

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All compounds of carbon are made by _____.

Andrew [12]

Answer:

Covalent bonding

Explanation:

Covalent bonding is the bond that holds all compound that are formed by carbon.

It is a very strong intermolecular bond that holds the structure of carbon compounds in place.

Principally, covalent compounds are formed by sharing of electrons between contributing atoms.

Covalent bonds are the strongest bond types. A reason for this conclusion can be see in case of diamond. Here, there is a covalent linkage between the atoms present and the strength of these bonds is responsible for how strong the diamond crystal is

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3 years ago

K2Te+ Fe(HCO3)2------> KHCO3 + Fe Te<br> how do you balance the equation?

ololo11 [35]

Hey there!

K₂Te + Fe(HCO₃)₂ → KHCO₃ + Fe + Te

Start by balancing HCO₃ since it's a polyatomic ion.

Two on the left, one on the right. Add a coefficient of 2 in front of KHCO₃.

K₂Te + Fe(HCO₃)₂ → 2KHCO₃ + Fe + Te

Balance K .

Two on the left, two on the right. Already balanced.

Balance Te.

One on the left, one on the right. Already balanced.

Balance Fe.

One on the left, one on the right. Already balanced.

Our final balanced equation:

K₂Te + Fe(HCO₃)₂ → 2KHCO₃ + Fe + Te

Hope this helps!

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3 years ago

The web's ______ advantage allows for data and resource sharing that enables communication with a website.

Musya8 [376]

The web's connectivity advantage allows for data and resource sharing that enables communication with a website.

In our daily lives, communication helps us build relationships by allowing us to share experiences and needs and connect with others. It is the essence of life that allows us to share We all need to communicate.

The value of communication is based on relevant and timely information. Without such information, effective communication is not possible. Most of us are happy to connect with people who think like us. When you want to communicate with others, there are opportunities for conflict. Effective communication builds strong business and personal relationships because you learn to understand what people want and how to deliver it. When you feel like people are listening and understanding you, your work environment will naturally improve.

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2 years ago

Which isotope in each pair is more stable? Why?(a) ¹⁴⁰₅₅Cs or ¹³³₅₅Cs

kiruha [24]

Among ¹⁴⁰₅₅Cs and ¹³³₅₅Cs, <u>¹³³₅₅Cs</u> is more stable.

<h3>Briefly explained</h3>

Let's review the criteria that are used to determine a stable isotope. A stable isotope will have more neutrons than protons with a neutron to proton ratio somewhere between one and 1.52 On the high atomic number, we're up to 152 at low atomic numbers were closer to one. More stable isotopes have an even number of protons. And neutrons.

And stable isotopes have their proton or neutron number equal to one of these magic numbers. So if we have season one, It has 85 Protons are start 85 neutrons And 55 protons. So we have a neutron to proton ratio of 155 for CCM 1 33. We have 78 neutrons and 55 protons for a neutron to proton ratio of 1.42. 155 is a little high for z equal to 55.

Both of these are also odd. So ¹⁴⁰₅₅Cs is the least stable. ¹³³₅₅Cs is the most stable.

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2 years ago

a 50.0 mL sample of KCl requires 22.40 mL of 0.0229 M Pb(NO3)2 in order to completely titrate it. What is the Molarity of the KC

garik1379 [7]

Answer:

0.02052M

Explanation:

First, we need to write a balanced equation for the reaction. This is illustrated below:

2KCl + Pb(NO3)2 → 2KNO3 + PbCl2

The following were obtained from the question:

Molarity of Pb(NO3)2 = 0.0229M

Volume of Pb(NO3)2 = 22.40 = 22.4/1000 = 0.0224L

Number of mole of Pb(NO3)2 =?

Recall:

Mole = Molarity x Volume

Mole of Pb(NO3)2 = 0.0229x0.0224

Mole of Pb(NO3)2 = 5.13x10^-4mole

From the equation,

1mole of Pb(NO3)2 required 2moles KCl.

Therefore, 5.13x10^-4mole of Pb(NO3)2 will require = 5.13x10^-4x2 = 1.026x10^-3mole of KCl.

Now we can use this amount (i.e 1.026x10^-3mole) to find the molarity of KCl. This is illustrated below:

Mole of KCl = 1.026x10^-3mole

Volume of KCl = 500mL = 50/1000 = 0.05L

Molarity =?

Molarity = mole /Volume

Molarity of KCl = 1.026x10^-3/0.05

Molarity of KCl = 0.02052M

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4 years ago