in the image shown above which type of heat transfer is represented by the number 3?
A-conduction
B-convection
C-latent heat
D-radiation

Answer:

Salt

Explanation:

Answer: A gas

Explanation: Contrary to popular belief, it is not salt. Salt can be separated from water.

Answer:

4.96 x 10²²atoms

Explanation:

Given parameters

Mass of Ba  = 11.3g

Unknown:

Number of atoms  = ?

Solution:

To solve this problem, we need to find the number of moles of Ba first and then the number of atoms it contains.

    Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

  Molar mass of Ba = 137.3g/mol

  Number of moles  = [tex]\frac{11.3}{137.3}[/tex]   = 0.08mole

 1 mole of a substance contains 6.02 x 10²³ atoms

  0.08 mole of Ba will contain 0.08 x 6.02 x 10²³ atoms  = 4.96 x 10²²atoms

Answer: False

Explanation: False. Replication. The process of DNA copying itself begins when the two sides of the DNA molecule unwind and " separate ".

Answer:

I think the answer is A) repeatedly testing the solubility at various temperatures

Explanation:

0.0463 mol KCl

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Step 1: Define

3.45 g KCl

Step 2: Identify Conversions

Molar Mass of K - 39.10 g/mol

Molar Mass of Cl - 35.45 g/mol

Molar Mass of KCl - 39.10 + 35.45 = 74.55 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

0.046278 mol KCl ≈ 0.0463 mol KCl

Answer:

B. Hydrogen (H)

c. Nitrogen (N)

D. Sodium (Na)

Explanation:

Answer:

This question is all sorts of messed up but i'm pretty sure I figured it out and its  

A

Explanation:

Answer:The number of atoms in 2.0 mole Al is A. 2.0 Al atoms. B. 3.0 x 1023 Al atoms.

Secondly, is aluminum an atom or molecule? Aluminum is the second element in the thirteenth column of the periodic table. It is classified as a post-transition metal and a "poor metal". Aluminum atoms contain 13 electrons and 13 protons. There are 3 valence electrons in the outer shell.

Answer:

554.13 grams

Explanation:

The mass of 5.82 mol of MgCl2 is 552.9g. Details about how to calculate mass can be found below.

The mass of a substance can be calculated by multiplying the number of moles of the substance by its molar mass.

According to this question, there are 5.82 moles of MgCl2. The mass is calculated thus:

molar mass of MgCl2 = 24 + 35.5(2) = 95g/mol

mass of MgCl2 = 95g/mol × 5.82 moles

mass of MgCl2 = 552.9g

Therefore, the mass of 5.82 mol of MgCl2 is 552.9g.

Learn more about mass at: https://brainly.com/question/19694949

#SPJ2

Answer:

Hydrolysis reaction

Explanation:

Answer:

blank 1 ----> 1

blank 2 -----> 1

blank 3 ------> 3

Explanation:

easy one!

Answer:0.124 mol- I think not completely positive on it

Explanation:6680⋅mm⋅Hg is not a realistic measurement of pressure....

I assume you mean 6680⋅mm⋅Hg/760⋅mm⋅Hg⋅atm^-1 = 8.79⋅atm.

And we use the Ideal Gas Equation:

n=PV/RT=8.79⋅atm×0.347⋅L/0.0821⋅L⋅atm⋅K−1⋅mol−1×300⋅K=0.124⋅mol

Answer:

4.9 x 10²²hockey pucks

Explanation:

Given parameters:

Number of moles of hockey  = 0.0814moles

Unknown:

Number of pucks there = ?

Solution:

A mole of a substance is made up of Avogadro's number of particles.

Therefore;

       1 mole of hockey pucks will contain 6.02 x 10²³ hockey pucks

       0.0814 mole of hockey pucks will contain :

                              0.0814 x 6.02 x 10²³ = 4.9 x 10²²hockey pucks

Answer:

MgO + H₂

Explanation:

The products of reaction is MgO  and hydrogen gas.

This is a single displacement reaction.

In this reaction, the possibility of the reaction is determined by position of the atoms on the activity series.

 Mg is higher than H on the activity series, so it is more reactive and it then displaces the hydrogen in water;

            Mg + H₂O → MgO + H₂

Answer:

D: Condensation

Explanation:

Hope This Helps! :)

the number of protons in the nucleus in an atom

Answer:

the atomic number represents the number of protons an atom has.

We are given:_______________________________________________

Volume of Gas (V) = 2.5L

Pressure (P) = 1.2 atm

Temperature (T) = 25°C  OR 25+273 = 298 K

Universal Gravitational Constant (R) = 0.0821

Solving for number of moles:___________________________________

From the Ideal Gas Equation,

PV = nRT

(1.2)(2.5) = n(0.0821)(298)           [plugging the given values]

n = [(1.2)(2.5)] / [0.0821*298]

n = 300 / [298*8.21]

n = 0.12 moles

Hence, there are 0.12 moles of Oxygen in 2.5L of 1.2 atm gas when the temperature is 25°C

Answer:

CARBON MONOXIDE

Explanation:

Carbon monoxide is produced by incomplete combustion of hydrocarbon fuels. Poisoning by carbon monoxide is caused by operating improperly vented space heaters or furnaces in poorly ventilated buildings.

Answer:

Increase of pressure

Explanation:

When the rock is placed in the water is adds pressure into the water causing it to rise.

Answer:

Explanation:

Types of Chemical Reactions - Double Displacement Reactions.

Answer:

All measurements have a degree of uncertaintyregardless of precision and accuracy. This is caused by two factors, the limitation of the measuring instrument (systematic error) and the skill of the experimenter making the measurements (random error).

Answer:

(1) Digestive System gets nutrients (good) from food and hands it over to the blood and Circulatory System then carries those nutrients where they need to go. (2) Filters out waste from food and pushes it through intestines and out the body (and you know how and where it gets out).

Answer: radiation

Explanation: im not sure so dont take my word fot it

Answer:

872093.02moles

Explanation:

Given parameters:

Number of atoms of Sucrose  = 5.25 x 10²⁹atoms

Unknown:

Number of moles  = ?

Solution:

To solve this problem, we must understand that a mole of any substance contains the Avogadro's number of particles.

             6.02 x 10²³ atoms makes up 1 mole of an atom

             5.25 x 10²⁹ atoms will contain = [tex]\frac{5.25 x 10^{29} }{6.02 x 10^{23} }[/tex]  = 872093.02moles

Answer:

1. Where the sun's energy is produced.

Explanation:

2. Region that energy moves through radiation

3. Hot gases move up and cool gases sink down.

4.  Appears as a red ring around the sun.

I really hope this helps :)

Answer

Ethiopia, Niger, Chad

Exlination-

Answer:

CF₄

Explanation:

The molecular formula of the structure shown by the representation is given as:

     CF₄

The central atom is C and it is surrounded by 4 atoms of Fluorine.

Answer: Milligrams ,grams ,kilograms ,quintals, tons

Explanation: Hope this helps