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3 years ago

Action and reaction forces always cancel out. question 1 options: a. True b. False

Chemistry

1 answer:

Greeley [361]3 years ago

6 0

I believe that this is False.
hope this helps!

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What does reaction b tell you about the type of molecule h2co3 is?

irinina [24]

H2o means water and co3 is co-signs

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3 years ago

Write the isotopic symbol for the following (show your work) a) An isotope of iodine whose atoms have 78 neutrons b) An isotope

morpeh [17]

Answer:

For a: The isotopic representation of iodine is $_{53}^{131}\textrm{I}$

For b: The isotopic representation of cesium is $_{55}^{137}\textrm{Cs}$

For c: The isotopic representation of strontium is $_{38}^{52}\textrm{Sr}$

Explanation:

The isotopic representation of an atom is: $_Z^A\textrm{X}$

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

For a:

We are given:

Number of neutrons = 78

Atomic number of iodine = 53 = Number of protons

Mass number = 53 + 78 = 131

Thus, the isotopic representation of iodine is $_{53}^{131}\textrm{I}$

For b:

We are given:

Number of neutrons = 82

Atomic number of cesium = 55 = Number of protons

Mass number = 55 + 82 = 137

Thus, the isotopic representation of cesium is $_{55}^{137}\textrm{Cs}$

For c:

We are given:

Number of neutrons = 52

Atomic number of strontium = 38 = Number of protons

Mass number = 38 + 52 = 90

Thus, the isotopic representation of strontium is $_{38}^{52}\textrm{Sr}$

3 0

3 years ago

Which statements describe the law of conservation of charge? Check all that apply.

AlekseyPX

The statements in accordance with the law of conservation of charge are:
A. The total charge of the reactants and products must be equal
B. The net charge of an isolated system remains constant

Both of these statements follow the law of conservation of charge which states that charge may neither be created nor destroyed, due to which the total charge in an isolated system (one in which charge can not move in or out of) remains constant.

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3 years ago

Fluorine + sodium chloride → sodium fluoride + __________. What is the missing chemical name?

Deffense [45]

Answer:

Chlorine (Cl)

Explanation:

The equation would be:

$F+NaCl$ → $NaF + Cl$

This is because no atom is lost in a reaction. Chlorine would be the missing chemical as it is on the other side of the equation and needs to be accounted for on the products side.

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3 years ago

At S?fndnfnfnfxmckfkffkfkfk ckfkfkfkfkfkv kfflfmcmc

IRINA_888 [86]

Answer:

what?

Explanation:

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3 years ago