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Listed in the Item Bank are some key terms and expressions associated with the categories seen in the Venn Diagram. To find out more
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Carbon dioxide is a product. Carbon dioxide is a reactant. Carried out in animals.
Carried out in plants
Chemical Reaction
Oxygen is a product
Oxygen is reactant Produces usable energy sourc
Cellular Respiration
Both
Photosynthesis

Answer: With power and energy, power is units of energy divided by time. The same difference as distance and velocity. The units of power are watts, the units of energy are joules.

Explanation:

abcdefghijklmnopqrstuvwxyzExplanation:abcdefghijklmnopqrstuvwxyz

Answer:

second law

Explanation:

Answer:

single replacement reaction is type of reaction is Au2S+H2---> 2Au+H2S.

Answer:

40.34 g

Explanation:

First, we divide the heat to release by the heat of combustion to obtain the required moles of compound:

541.20 kJ/(1160.00 kJ/mol) = 0.4665 mol

So, we have to burn approximately 0.47 mol of the compound. We convert the moles to mass in grams by using the molar mass:

mass = molar mass x moles = 86.47 g/mol x 0.4665 mol = 40.34 g

Therefore, you must burn 40.34 grams of the compound to release 541.20 kJ of heat.

Answer:

F=500×3 = 1500 N

W = 1500×10 =15000 Nm

Answer:

Magnesium

Explanation:

The element that could provide one atom to make an ionic bond with oxygen is magnesium.

Generally, most group II elements will form an ionic bond with oxygen with just one atom.

An ionic bond forms by the transfer of electrons from one specie to another.

Oxygen has a charge of 2-, to use one atom to form ionic bond with this specie, a magnesium atom with 2+ charge will bond with the specie.

 This will form:

                        MgO

This is notable for other group II elements.

Answer:

C.

Explanation:

Phase change is physical.  

When Nitrogen gas forms a liquid is a physical change because it was only a state change from solid to liquid. Therefore, option C is correct.

A physical change takes place when some of the features of the matter change but the identity of the material does not. Physical changes can be categorized as reversible and irreversible. For example, the melting of water is reversible since the melted ice can be refrozen.

Physical change can be described as a kind of change where only physical properties of matter such as solubility, color, odor, etc. can change. During physical changes in matter, there will be no chemical bonds are broken or formed between atoms in the molecule.

The chemical composition as well as the chemical nature of the material will remain unchanged while a physical change.  The molecules can rearrange without changing the internal chemical composition of matter.

Therefore, changing the state of nitrogen gas is a physical change.

Learn more about physical change, here:

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Answer:

when sodium reacts with chlorine atoms, sodium will give an electron which is negative charged to chlorine.it makes sodium(+) and chlorine (-)..then sodium will attract chlorine to form sodium chloride(NaCl)

Answer:

It makes chemicals hot or cold which makes chemicals react differently

Explanation:

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Answer:Waves.sry if this is wrong.

Explanation:

Answer:

See explanation

Explanation:

The boiling point of a substance is affected by the nature of bonding in the molecule as well as the nature of intermolecular forces between molecules of the substance.

2-methylpropane has only pure covalent and nonpolar C-C and C-H bonds. As a result of this, the molecule is nonpolar and the only intermolecular forces present are weak dispersion forces. Therefore, 2-methylpropane has a very low boiling point.

As for 2-iodo-2-methylpropane, there is a polar C-I bond. This now implies that the intermolecular forces present are both dispersion forces and dipole interaction. As a result of the presence of stronger dipole interaction between 2-iodo-2-methylpropane molecules, the compound has a higher boiling point than  2-methylpropane.

Answer: A. AB+C->CB+A

Explanation:

The chemical reaction includes the reactant and products. The single replacement reaction can be given as AB + C → CB + A. Thus option a is correct.

A single replacement reaction is the exchange reaction that involves the substitution of a single element of the reactant with another element of the reactant species.

The reaction between zinc and copper chloride is a single replacement reaction as copper is replaced by zinc in the copper chloride compound to produce zinc chloride and copper.

Therefore, option A. AB + C → CB + A is the single replacement reaction.

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Mass of O₂ formed = 7.84 g

Given

Reaction

2KClO₃(s) ⇒2KCl(s) + 3O₂(g)

P water = 23.8 mmHg

P tot = 755 mmHg

V = 6.22 L

T = 25 + 273 = 298 K

Required

mass of O₂

Solution

P tot = P O₂ + P water

P O₂ = P tot - P water

P O₂ = 755 - 23.8

P O₂ = 731.2mmHg = 0.962 atm

Ideal gas law :

n = PV/RT

n = 0.962 x 6.22 / 0.082 x 298

n = 0.245

= mol x MW

= 0.245 x 32

= 7.84 g