Which method of heat transfer can take place without matter? O Conduction O Convection O Insulation O Radiation

Chemistry

2 answers:

astra-53 [7]3 years ago

4 0

Answer:

it is conduction

Explanation:

The mechanism in which heat is transferred from one object to another object through particle collisions is known as conduction. In conduction, there is no net transfer of physical stuff between the objects.

Eva8 [605]3 years ago

3 0

Answer:

Radiation

Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission.

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Formula New Combination Predicted Formula

creativ13 [48]

Answer:

Formula New Combination Predicted Formula


NaCl potassium + chlorine KCl

AlCl₃ aluminum + fluorine AlF₃

CO₂ tin + oxygen SnO₂

MgCl₂ calcium + bromine CaBr₂

HCl cesium + iodine CsI

 CCl₄ silicon + bromine SiBr₄

Explanation:

1) The question is incomplete. The first part is missing.

This is the first part of the question.

Applying the principle that the elements of a particular column in the Periodic Table share the same chemical properties, complete the following chart. The first one has been done for you.


2) This is the given chart:

Formula New Combination Predicted Formula


Cu₂O silver + oxygen Ag₂O ← this is the example.

NaCl potassium + chlorine

 AlCl₃ aluminum + fluorine 

CO₂ tin + oxygen

 MgCl₂ calcium + bromine 

 HCl cesium + iodine 

 CCl₄ silicon + bromine 

3) This is how you find the new formula to complete the chart.

i) NaCl potassium + chlorine

Since potassium is in the same group of sodium, you predict that in the new formula Na is replaced by K giving KCl.

ii) AlCl₃ aluminum + fluorine

Since fluorine is in the same group that Al, then you predict that in the new formula Cl is replaced by F leading to AlF₃

iii) CO₂ tin + oxygen

Since tin is in the same group that C, you predict that in the new formula C is replaced by Sn leading to SnO₂

iv) MgCl₂ calcium + bromine

Since calcium is in the same group that Mg, and bromine is in the same group that Cl, you predict thea in the new formula calcium replaces Mg and bromine replaces Cl, leading to CaBr₂

v) HCl cesium + iodine

Since H is in the same column that cesium and Cl is in the same colum that iodine, you predict that in the new formula Cs replaces H and I replaces Cl leading to: CsI

 vi) CCl₄ silicon + bromine


Since silicon is in the same column that C and bromine is in the same column that Cl, you predict that in the new formula Si replaces C and Br replaces Cl, leading to SiBr₄

5 0

3 years ago

Which device or substance is a type of nuclear reactor?

Alecsey [184]

Your answer would be boiling water because it creates stem and stem is pressure i hope this helps

5 0

4 years ago

Read 2 more answers

Calcium carbonate forms limestone, one of the most common rocks on Earth. It also forms stalactites, stalagmites, and many other

max2010maxim [7]

Answer: $CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$ , 0.533 L

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

$CaCO_3(s)\rightarrow CaO(s)+CO_2(g)$

According to avogadro's law, 1 mole of every substance occupies 22.4 L of volume at STP.

Number of moles = $\frac{\text {given mass}}{\text {Molar mass}}$