Which of the following identifies the models that represent an ion and an isotope of the original atom?

A)Model 1 is an ion; Model 3 is an isotope
B)Model 2 is an isotope; Model 3 is an ion
C)Model 1 is an ion; Model 2 is an isotope
D)Model 1 is an isotope; Model 2 is an ion

Answer:

0.04

Explanation:

“Many of the objections are long standing but apparently unknown to many geophysicists, while some are peculiar to the new global tectonics. The conclusions drawn, in order of probability, are (1) the continents have almost certainly not moved with respect to each other; (2) convection is not active throughout the whole mantle; (3) even if convection is active in the upper mantle it cannot account for drift; (4) pole positions derived from paleomagnetism, and results of this method of investigation in its global form generally, are afflicted with an unknown cause of error and are in any case too inexact for drift reconstructions.”

(Wesson, 1972)

Answer:

Moving water helps plant's and islands form and grow. Which shapes earth.

Answer:

The ball speeds up

Explanation:

Answer:

When one object uses force to move the other.

Explanation:

This is called Thrust.Thrust is used in airplane engines,or an engine can be  a source of Thrust,we use our legs to Thrust us forward when we walk!

Sir Isaac Newton's third law explains that for every action, or force, in nature, there is an equal and opposite reaction.

Hope that helps!

Answer:

Answer:

The mass number

Explanation:

The mass number of an atom is its total number of protons and neutrons.

I hope this helps a bit.

Answer:

-15-12-14=-13

Explanation:

we simplify by opening the bracket

Answer:

[tex]0.30molNH_3[/tex]

Explanation:

Hello there!

In this case, since the reaction for the formation of ammonia is:

[tex]3H_2+N_2\rightarrow 2NH_3[/tex]

We can evidence the 1:2 mole ratio of nitrogen gas to ammonia; therefore, the appropriate stoichiometric setup for the calculation of the moles of the latter turns out to be:

[tex]0.15molN_2*\frac{2molNH_3}{1molN_2}[/tex]

And the result is:

[tex]0.30molNH_3[/tex]

Best regards!

Answer:

I would say go with B not so sure but pretty sure it is

Answer:

choice B

58Fe^2+

Explanation:

hope this helped

Answer:

the answer is d.

Explanation:

because the core is deepest then is the mantle and the lithpsphere is last .

I put a picture incase you need a visual example.

Answer:

25,104

Explanation:

100.0 x 4.184 x 60.0 = 25,104

Energy required to heat up 100 grams of water(4.184J/g°C) from 0.000C to 60.00C is 25,104.

The science of thermodynamics examines the connections between heat, work, temperature, and energy. The rules of thermodynamics explain how energy moves inside a system and whether or not the system is capable of performing beneficial work on its surroundings. The heat needed to increase one gram of a substance's temperature by one degree Celsius is known as specific heat capacity.

Here,

The specific heat capacity of water is 4.184 J/g° C

This is the heat required to increase the temperature by 1°C.

same way, 4.186J is heat required to raise the temp of 1 gram of water.

Derived equation is: q = mcΔT

Where,

q is heat required

c is specific heat capacity of the substance

m is mass of the substance and

ΔT is the change in temperature

Given,

m = 100g

ΔT = 60.00C - 0.00C

ΔT = 60°C

c = 4.184 J/g°C

now, substitute the values:

q = mcΔT

q = 100 × 60 × 4.184

∵ q = 25,104

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Answer:

hello your question is incomplete attached below is the complete question

answer : attached below

Explanation:

The Lewis structure given in the question is incorrect attached below is the correct Lewis structure.

Lewis structure of a molecule is the representation of the valence electrons in a molecule

Answer:

0.5 mole

Explanation:

The equation for the reaction is given below:

2Cu + S —> Cu2S

We can calculate the mole of copper (Cu) needed to react with sulphur (S) to produce 0.25 mole of copper(I) sulfide (Cu2S) by doing the following:

From the balanced equation above,

2 moles of Cu reacted to produced 1 mole of Cu2S.

Therefore, Xmol of Cu will react to produce 0.25 mole of Cu2S i.e

Xmol of Cu = 2 x 0.25 = 0.5 mole

Therefore, 0.5 mole of copper (Cu) will react with sulphur (S) to produce 0.25 mole of copper(i)sulfide (Cu2S)

Answer:

Lithium has a smaller atomic radius than potassium

Explanation:

Lithium has fewer electrons therefore fewer orbitals (1s2, 2s1) vs Potassium with more electron and therefore orbitals (1s2, 2s2, 2p6, 3s2, 3p6, 4s1)

Answer:

Food and cell type

Explanation:

Kingdoms are by far the most basic legal structure for living objects. Living objects are classified into realms depending on how they consume food, the kinds of cells that produce their bodies, and the total type of tissue in their bodies.

Here's link to the answer:

tinyurl.com/wpazsebu

Answer:

true

Explanation:

Answer:

b. trueeeeeeeeeeeeeeeeeeeeeeeeeeee

Answer:

30 grams

Explanation:

Molarity of a solution represents its molar concentration, and can be calculated by using the formula as follows:

Molarity (M) = number of moles (n) ÷ volume (V)

Based on the information provided, volume of solution = 500 milliliters, molarity = 1M

Volume of solution in liters = 500mL ÷ 1000 = 0.50L

Molarity = n/V

1 = n/0.50

n = 0.50moles

Using mole = mass/molar mass

Molar mass of CH3COOH (acetic acid) = 60g/mol

Mass = mole × molar mass

mass = 0.50 × 60

mass = 30 grams.

Answer:

-198.15 degrees Celsius

Explanation:

To convert to Celsius from Kelvin, subtract 273.15 from your temperature in Kelvin.

75K - 273.14 = 198 degrees C

Answer:

a. Ca(OH)₂ = 74.08 g/mol

b. H₂O₂ = 34 g/mol

c. KCl = 74.55 g/mol

d. NaH₂PO₄  = 119.97 g/mol

Explanation:

In order to determine the molar mass of each compound we need to sum, the molar mass of each element.

a. Ca(OH)₂

40.08 g/mol (Ca) + 2 . 16 g/mol (O) + 2 . 1 g/mol (H) = 74.08 g/mol

b. H₂O₂ → 2 . 1 g/mol (H) + 2 . 16 g/mol (O) = 34 g/mol

c. KCl → 39.1 g/mol (K) + 35.45 g/mol (Cl) = 74.55 g/mol

d. NaH₂PO₄

23 g/mol (Na) + 2 . 1 g/mol (H) + 30.97 g/mol (P) + 4 . 16 g/mol (O) = 119.97 g/mol

Answer

b

Explanation: