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3 years ago

Matter appears to be conserved in chemical reactions but not in nuclear reactions because:

2 answers:

8 0

I think the best answer is B. Even this is the broadest case for the Conservation of matter and the one for Energy, the only way this can be applied is in nuclear rxns.

kozerog [31]3 years ago

5 0

Answer: The law of conservation of mass-energy applies only to nuclear reactions

Explanation: In nuclear reactions, mass and energy both are conserved but not in a simple manner.

The nuclear reactions are known to violate the law of conservation of mass because the rest mass is converted and appears in the form of kinetic energy.

But the toral energy remains the same.

Thus it can be said that the sum of mass and energy are conserved n the nuclear reactions.

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Find the volume of a gas if 3.6 mols of the gas is at STP

Digiron [165]

Answer:

81 L gas

General Formulas and Concepts:

Ideal Gas Law

STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 3.6 mols gas at STP

[Solve] volume (L) of gas

Step 2: Convert

[DA] Set up: $\displaystyle 3.6 \ mol \ gas(\frac{22.4 \ L \ gas}{1 \ mol \ gas \ at \ STP})$
[DA] Multiply [Cancel out units]: $\displaystyle 80.64 \ L \ gas$

Step 3: Check

Follow sig fig rules and round. We are given 2 sig figs.

80.64 L gas ≈ 81 L gas

6 0

2 years ago

Ionization and electronegativity are related to the periodic table in that:

Alla [95]

The answer would be A.

5 0

2 years ago

Table Salt or NaCl is composed of sodium and chlorine. While the individual elements of sodium and chlorine are very reactive, t

Deffense [45]

Answer:

Chlorine is more likely to steal a valence electron from sodium.

Explanation:

Sodium is number 11 on the periodic table with one valence electron. Belonging to the first group, it's one of the alkali metal, which are known to be highly reactive. Chlorine is number 17 with seven valence electrons, and it's in the second-to-last group of halogens--also very reactive.

Considering that elements with one valence electron are just about 100% likely to give up electrons to reach a stable state, sodium would be the element that is more likely to lose its valence electron to chlorine. In other words, chlorine would be the electron thief.

5 0

3 years ago

What would be the definition of concentration?

MariettaO [177]

Answer:

the action or power of focusing one's attention or mental effort.

Explanation:

8 0

2 years ago

Nonmetals are poor ____________ of both heat and electricity.

Masteriza [31]

Answer:plz brainly me;)

Your answer is "A" Conductors

Nonmetals include common gasses that are found in the atmosphere, such as nitrogen and oxygen, as well as sulfur (S) and carbon too. Nonmetals are usually not good conductors of heat and electricity.

3 0

2 years ago

Read 2 more answers