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3 years ago

What do all four of these types of molecules have in common?

Chemistry

1 answer:

nalin [4]3 years ago

3 0

D. They all contain carbon as an important part of their structure.

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The ____________ ___________ is the outer part of the atom?

abruzzese [7]

Possibly electron shells, the electrons in the outermost occupied shell (or shells) determine the chemical properties of the atom..

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3 years ago

Which of the following describe chemical properties?

VLD [36.1K]

Antacid tablets neutralize stomach acid

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3 years ago

A decrease in the magnitude of velocity is called

IceJOKER [234]

The answer is deceleration. Acceleration is the general term to refer to the change in velocity. Acceleration = change in velocity / change in time. When you want to highlight the fact that the change in velocity is a decrease in the magnitude, you can use the term deceleration, which means that the acceleration is negative.

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3 years ago

how much energy must be released by 50.0 g of steam to decrease its temperature from 125.0 degrees Celsius to 100.0 degrees Cels

REY [17]

Answer:

5250 Joules

Explanation:

Mass = 50g

Initial Temperature = 125.0 degrees Celsius

Final Temperature = 100 degrees Celsius

Temperature change = Final - Initial = 100 - 125 = -25

Heat = ?

These quantities are related by the equation;

H = mCΔT

where c = specific hear capacity = 4.2 J/g°C

H = 50 * 4.2 * (-25)

H = -5250 J (The negative sign is because heat is being released)

7 0

3 years ago

Balance 6Sb +6Cl2– 6SbCl3

labwork [276]

Answer:

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 and the 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 $\times$ subscript $\times$ 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

$1Sb +1Cl_2 > 1SbCl_3$

(Unbalanced)

Reactant side - Number of atoms of each element - Product side

1 - Sb - 1

2 - Cl - 3

So we have on the product side odd number of Cl to convert to even number, multiply $SbCl_3$ by 2

The equation changes to

$1Sb +1Cl_2> 2SbCl_3$

Reactant side - Number of atoms of each element - Product side

1 - Sb - 2

2 - Cl - 6

Multiplying Sb by 2 and $Cl_2$

$2Sb +3Cl_2> 2SbCl_3$

The equation is balanced now!!!!

Reactant side - Number of atoms of each element - Product side

2 - Sb - 2

6 - Cl - 6

Balanced.

4 0

3 years ago