A force that keeps objects in motion from going on forever

Answers

Answer 1

Answer: It's called "inertia". Inertia keeps an object from going by using friction.

Answer 2

Answer: First off, most subjects relating to 'force' is usually physics.
Secondly, There is no force that acts forever.

However, because of the law of inertia (I know, stupid and long name), if you make something move and you just leave it (without anything like oxygen, friction, etc.,. trying to stop the object), it will move forever.

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The following mechanism has been proposed for the gas-phase reaction of chloroform (CHCl3) and chlorine:Step 1: Cl2(g)⇌2Cl(g)(fast)Step 2: Cl(g)+CHCl3(g)→HCl(g)+CCl3(g)(slow)Step 3: Cl(g)+CCl3(g)→CCl4(fast)What is the overall rate constant?

How to separate sugar and salt

Answers

Mix it in alcohol.
Sugar is soluble in alcohols but salt isn’t. You mix it in alcohol, filter the solution to get the salt. After that you evaporate the alcohol/sugar mixture and you’re left with the sugar.

Hope this helped xx

In a given chemical reaction, the energy of the products is less than the energy of the reactants. Which statement is true for this chemical reaction?

Answers

The answer is that, the reactants lose energy to the sorrounding during the reaction. This makes the products have less energy than the reactants that combined to produce them.

Answer:

The correct answer is B

Explanation:

Classify the chemical equations as being balanced or not balanced

Answers

Answer: Two of them are balanced and two of them are unbalanced.

Explanation:

A balanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is equal to the total number of individual atoms on the product side. These equations follow law of conservation of mass.

An unbalanced chemical equation is defined as the equation in which total number of individual atoms on the reactant side is not equal to the total number of individual atoms on the product side. These equations does not follow law of conservation of mass.

For the given chemical equations:

Equation 1: $2CO+2NO\rightarrow 2CO_2+N_2$

As, number of carbon, nitrogen and oxygen atoms on the reactant side is equal to the number of carbon, nitrogen and oxygen atoms on the product side. Thus, this is a balanced chemical equation.

Equation 2: $6CO_2+6H_2O\rightarrow C_6H_(12)O_6+O_2$

As, number of oxygen atoms on the reactant side is not equal to the number of oxygen atoms on the product side. Thus, this is not a balanced chemical equation.

Equation 3: $H_2CO_3\rightarrow H_2O+CO_2$

As, number of carbon, nitrogen and oxygen atoms on the reactant side is equal to the number of carbon, nitrogen and oxygen atoms on the product side. Thus, this is a balanced chemical equation.

Equation 4: $2Cu+O_2\rightarrow CuO$

As, number of oxygen and copper atoms on the reactant side is not equal to the number of oxygen and copper atoms on the product side. Thus, this is not a balanced chemical equation

Hence, two of the equations are balanced and two are unbalanced.

1,2,4 are not balanced, 3 is balanced

if a star is 300 light years from earth how long does it take light from the star to reach earth/12327655/b8099c19?utm_source=registration

Answers

It would take 300 light years to reach Earth.
I hope this helps !

Complete the following chemical equations BaCl2.2H2O

Answers

Answer:

$BaCl_2.2H_2 O > BaCl_2 + 2H_2 O$

Explanation:

Balancing is making the number of atoms of each element same on both the sides (reactant and product side).

To find the number of atoms of each element we multiply coefficient $*$ subscript

For example $5 Ca_1 Cl_2$ contains

5 × 1 = 5 ,Ca atoms and

5 × 2 = 10, Cl atoms

If there is a bracket in the chemical formula

For example $3Ca_3 (P_1 O_4 )_2$ we multiply coefficient × subscript × number outside the bracket to find the number of atoms

(Please note: 3 is the coefficient, and if there is no number given then 1 will be the coefficient )

3 × 3 = 9 , Ca atoms

3 × 1 × 2 = 6, P atoms

3 × 4 × 2 = 24, O atoms are present.

Let us balance the equation given

$BaCl_2.2H_2 O > BaCl_2 + 2H_2 O$

(balanced equation)

Reactant side Elements Product side

1 Ba 1

2 Cl 2

4 H 4

2 O 2

Balanced!!!

Which changes occur in the composition of the earths layers from the surface to the core

Answers

Answer:

B. The material is cooler and denser.

Explanation:

The earth is made up of three layers, the crust, the mantle and the core. Each layer has different characteristics and temperatures, becoming warmer and less dense as it approaches the core.

Man has never reached the core of the earth, but the study of the internal structure of the planet is possible thanks to the studies of geophysicists, who are dedicated to the study of seismology. They observe the phenomena of seismic waves and rely on apparatus to define the characteristics of each layer.

Earth's crust: Most superficial layer, relatively thin structure and very rocky.
Mantle: Located below the crust, it has solid properties.
Core: Earth's warmest, least dense layer.

The mantle is the least hottest

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