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3 years ago

A Lewis acid is a substance that can

1 answer:

katrin2010 [14]3 years ago

6 0

Accept a pair of nonbonding electrons,a Lewis acid is an electron-pair acceptor. A Lewis<span> base is any </span>substance, such as the OH-<span> ion, that </span>can<span> donate a pair of nonbonding electrons. </span>A Lewis<span> base is therefore an electron-pair donor.</span>

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What is the density of a substance with mass of 418.23g and a volume of 436.2ml

KiRa [710]

Answer:

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume}\\$

From the question we have

mass = 418.23 g

volume = 436.2 ml

$density = \frac{418.23}{436 .2} \\ = 0.958803$

We have the final answer as

Hope this helps you

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3 years ago

Drop your snap!!!!!!!

8090 [49]

Answer:

no <3

Explanation:

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3 years ago

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For each of the following, use the periodic table to determine the number of valence electrons in an atom of the element.

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Explanation:

Ne 8. S 6. Mg 2. Sn 4. C 4. Al 3. Te 6. Cs 1. Bi 5. Br 7. Ga 3. P 5.

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3 years ago

A 32.2 g iron rod, initially at 21.9 C, is submerged into an unknown mass of water at 63.5 C. in an insulated container. The fin

lorasvet [3.4K]

Answer : The mass of the water in two significant figures is, $3.0\times 10^1g$

Explanation :

In this case the heat given by the hot body is equal to the heat taken by the cold body.

$q_1=-q_2$

$m_1\times c_1\times (T_f-T_1)=-m_2\times c_2\times (T_f-T_2)$

where,

$c_1$ = specific heat of iron metal = $0.45J/g^oC$

$c_2$ = specific heat of water = $4.18J/g^oC$

$m_1$ = mass of iron metal = 32.3 g

$m_2$ = mass of water = ?

$T_f$ = final temperature of mixture = $59.2^oC$

$T_1$ = initial temperature of iron metal = $21.9^oC$

$T_2$ = initial temperature of water = $63.5^oC$

Now put all the given values in the above formula, we get

$32.3g\times 0.45J/g^oC\times (59.2-21.9)^oC=-m_2\times 4.18J/g^oC\times (59.2-63.5)^oC$

$m_2=30.16g\approx 3.0\times 10^1g$

Therefore, the mass of the water in two significant figures is, $3.0\times 10^1g$

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3 years ago

The match between an individual's temperament and the environmental demands with which the individual must cope is known by the

Black_prince [1.1K]

Answer:

Goodness of fit

Explanation:

The goodness of fit - it is proposed by Thomas and chess in 1977. This term is used to defined coordination of child temperament and environment. while poorness of fit defines when temperament is not accommodated.

The goodness of fit is generally good for children's best learning. it is basically related to individual temperament and their social environment

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3 years ago

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