Which compound in the picture has a central atom with four outside atoms and has at least one nonpolar bond.?

Answer:

b

Explanation:

The atomic number tells us all of the following except B. The order in which the elements were discovered.

The atomic number is the number of protons in the nucleus of an atom. The number of protons outline the identity of detail (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

The atomic variety helps human beings discover factors in step with the variety of protons one atom of the element has. It essentially defines the element. while having a neutral rate, it also offers the variety of electrons the detail has (in one atom). while isotopes are a component, it would not completely exchange the atom.

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Answer: 3

Explanation:

Answer:

kinetic energy

Explanation:

may be iam not sure

Volume of Argon = 59.972 L

In general, the gas equation can be written  

[tex]\large {\boxed {\bold {PV = nRT}}}[/tex]

where  

P = pressure, atm  

V = volume, liter  

n = number of moles  

R = gas constant = 0.08206 L.atm / mol K  

T = temperature, Kelvin  

At STP(0 C, 1 atm), 1 mol gas= 22.4 L

so for 20 L

[tex]\tt \dfrac{20}{22.4}=0.893[/tex]

For Argon

P = 1 atm

T = 273 K x 3 =819 K (tripled)

n = 0.893 (the same number of moles)

R = 0.082 L/atm.mol K

[tex]\tt V=\dfrac{nRT}{P}=\dfrac{0.893\times 0.082\times 819}{1}=59.972~L[/tex]

Answer:

4.9

Explanation:

Given data:

Mass of object = 67.4 ounce

Volume = 13.8 cup

Density = ?

Solution:

d = m/v

d = 67.4 ounce/13.8 cup

d = 4.9 oz/cup

Thus, density of object is  4.9 oz/cup.

Answer:

4.01 g

Explanation:

Answer:

Explanation:

The new pressure can be found by using the formula for Boyle's law which is

[tex]P_1V_1 = P_2V_2[/tex]

Since we are finding the new pressure

[tex]P_2 = \frac{P_1V_1}{V_2} \\[/tex]

From the question we have

[tex]V_2 = \frac{2 \times 4}{6} = \frac{8}{6} = \frac{4}{3} \\ = 1.333333...[/tex]

We have the final answer as

Hope this helps you

Explanation:

Molar mass of Ba(NO3)2 = 261.3368 g/mol

A reaction comprises a reactant and a product. It is said to be in equilibrium when the rates for the forward and reverse reactions are equal. Thus, option D is correct.

An equilibrium reaction is a thermodynamic condition where the reactants and the products are at a stable position even before and after the reaction. They remain fixed and do not vary with the addition of any catalyst.

In the equilibrium position, the reaction rate of the forward (product formation) and reverse (reactant formation) remains the same and is seen in the reversible reactions only.

The amount of the products and the reactant remains constant till the temperature is constant but may vary if the tempearture is varied.

Therefore, the rate of reverse and forward are equal in the equilibrium reaction.

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Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

[tex]n = \frac{N}{L} \\ [/tex]

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

[tex]n = \frac{7.15 \times {10}^{24} }{6.02 \times {10}^{23} } \\ = 11.87707641...[/tex]

We have the final answer as

Hope this helps you

Answer: Crocodiles and tigers both have four legs

Explanation: Even when sharks and tigers are both meat eaters, the question is about similarities between tigers and crocodiles, so D is out. A is about crocodiles and sharks, so it's out also. B suits for sharks too, so it's out too. C is the most suitable answer, because both animals have four legs, which means that they belong to the group of quadrupede animals.

Answer:

Crocodiles and tigers both have four legs

Explanation:

Answer:

It is Physical Change

Explanation:

Because it is just water turning into another substance of water, nothing chemical is happening.

Answer:

Explanation:

Aside the boiling point of water, another colligative property that can be used to identify pure water (or not) is the freezing point. Water freezes at 0 °C, but with the presence of impurities, there is a freezing point depression of the water. Thus, if the water is not pure, the liquid could freeze at a temperature lower than 0 °C (with a negative sign like -8 °C).

Answer:

Equal

Explanation:

Energy is always conserved in the nature and it is an universal law. According to the law conservation of energy, it is said that energy can never be created out of something and we can never destroy and vanish any energy in any form. Energy in any form can only be transformed to some other forms of energy. This is known as conversion of energy.

In the context, the chemical energy that is produced by the battery and the electrical energy produced should be equal.

Answer:

Explanation:

All periodic tables list different amounts of elemental masses. I'm going to round Sodium to 23

1 mol of sodium = 23

0.0467 mol sodium = x

Cross multiply

1*x = 0.0467 * 23

x = 1.0741 grams

Answer:

A.  5 N to the left

Note: The question is incomplete. The complete question is given below:

With a force of 5 newtons, Amanda pushes the stack of books to the right. At the same time, Jeremy, her little brother, pushes the stack of books to the left with a force of 10 newtons.

What is the direction and magnitude of the resulting force?

A.  5 N to the left

B.  5 N to the right

C.  10 N to the right

D.  10 N to the left

Explanation:

Forces are vector quantities.

Vector quantities are quantities that can be represented both in magnitude and direction.

Forces have both magnitude and direction. Forces can be directed positively or negatively.

For example, in the question above, if forces acting to the right are considered to be in the positive direction, forces acting to the left are considered to be acting in a negative direction.

In the addition of forces, both their magnitude and direction are taken into consideration.

In the example above, taking forces acting to the right as positive and to the left as negative, the sum of the forces is:

Resultant force, F = (5 N) + (-10N)

F = -5 N

Therefore, the net force is 5 N and is directed towards the left

Answer:

5 N to the left

mass of the gas = 10 g

The law of conservation of mass :

In a closed / isolated system, the total mass of the substance before the reaction will be equal to the total mass of the reaction product.

Reaction

[tex]\tt X+Z\rightarrow gas+solution[/tex]

mass before reaction=mass after reaction

[tex]\tt 25+60=gas+75\\\\gas=25+60-75=10~g[/tex]

Answer:

Explanation:

After the glorious appearance of Full Moon, the lunar shape starts to wane, meaning it gets smaller. It's visible later at night and into the early morning, and we see a steadily shrinking shape of the lunar surface that's being lit up.

Answer: False

Explanation: The moon travels at 1.42 mph around the Earth.

Answer:

false

Explanation:

Answer:

helllllooooooo hi how is life

Answer:

hiiii

Explanation:

Answer:

10 g

Explanation:

The heating of copper can be represented by the following equation:

Cu + 1/2O2 ----> CuO

The new substance is copper oxide, CuO.

From the law of conservation of matter which says that matter can neither be created nor destroyed but be converted from one form to another, it means that barring any loss during heating, all the Cu should be converted to CuO. Hence, the amount of copper in the new substance should remain 10 g.

Answer:

cylindar a

Explanation:

I took the test

Answer:

A

Explanation:

Answer:

;l ok

Explanation:

Have the same number of protons but a different number of neutrons

The elements in nature have several types of isotopes

Isotopes are atoms whose no-atom has the same number of protons while still having a different number of neutrons.

So Isotopes are elements that have the same Atomic Number (Proton)

SO the Three Common Isotopes Of Oxygen :

₈¹⁶O, ₈¹⁷O, and ₈¹⁸O have :

1. The same number of protons = atomic number = 8

2. Have a different number of neutrons :(neutrons= mass number-atomic number)

₈¹⁶O : neutron = 16-8=8

₈¹⁷O : neutron = 17-8=9

₈¹⁸O : neutron = 18-8=10

Answer:

C

Explanation:

the rest are trends except for Electronegativity

Answer:

m(Ag) = 227.5g

Explanation:

...what is the mass of the piece of silver?

The heat given for the piece of silver is the same heat that is absorbed for the water, that is:

m(Ag)×C(Ag)×ΔT(Ag) = m(Water)×C(Water)×ΔT(Water)

m is mass of water in solution: 26.0mL = 26g of water

And m(Ag) is the mass of Ag, our incognite.

C is specific heat (0.240J/g°C for Ag), and 4.184J/g°C for water

ΔT is change in temperature (93.8°C - 44°C = 49.8°C) for Ag ad (44°C - 19°C = 25°C)

Replacing:

m(Ag)×C(Ag)×ΔT(Ag) = m(Water)×C(Water)×ΔT(Water)

m(Ag)×0.240J/g°C×49.8°C = 26g×4.184J/g°C×25°C

m(Ag)* 11.952J/g = 2719.6J