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3 years ago

Psychology is considered a science because it uses a systematic method of asking and answering questions true or false

Chemistry

1 answer:

Wittaler [7]3 years ago

6 0

Psychology is considered a science because it uses a systematic method of asking and answering questions true or false

It's true

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What does it mean when a reaction is spontaneous apex?

natima [27]

A reaction that is spontaneous means that it can produce products without the supply of energy. The total energy from the reactants reached the activation energy that allow the reaction proceed. An example of this is the decay of a diamond into graphite occuring readily.

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3 years ago

3. A cylinder of compressed gas has a pressure of 4.882 atm on one day. The next

Debora [2.8K]

Answer:

PART A

Explanation:

3. A cylinder of compressed gas has a pressure of 4.882 atm on one day. The next

day, the same cylinder of gas has a pressure of 4.690 atm, and its temperature is

8°C. What was the temperature on the previous day in °C? Ans: 20°C.

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3 years ago

Please help ASAP I’ll make you u as brainlister please 100 points pelaseee

inessss [21]

Answer:

Explanation:

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3 years ago

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Which element is capable of forming long chains by forming single, double, or triple bonds with itself?

gayaneshka [121]

Catenation is the property by which it can make bonds with other carbon<span> atoms to form long chains. Hence, </span>carbon<span>, with the least diffuse valence shell p orbital is capable of forming longer p-p sigma bonded chains of atoms than heavier elements which bond via higher valence shell orbitals.</span>

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3 years ago

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At 100.0∘C, the ion product of water is 5.13×10−13. What is the concentration of hydroxide ions at this temperature? Your answer

Trava [24]

Answer: The concentration of hydroxide ions at this temperature is $7.16\times 10^{-7}$

Explanation:

When an expression is formed by taking the product of concentration of ions raised to the power of their stoichiometric coefficients in the solution of a salt is known as ionic product.

The ionic product for water is written as:

$K_w=[H^+][OH^-]$

$5.13\times 10^{-13}=[H^+][OH^-]$

As $[H^+]=[OH^-]$

$5.13\times 10^{-13}=x^2$

$x=7.16\times 10^{-7}$

The concentration of hydroxide ions at this temperature is $7.16\times 10^{-7}$

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3 years ago