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3 years ago

Which is nitrated faster toluene or nitrobenzoate and why

1 answer:

4 0

The Malcontents' major complaints were that the Trustees had placed too many limitations on the ownership of land, the right to make and to buy alcohol, and the right to own slaves.

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What anions generally form precipitates? What are the exceptions?

8_murik_8 [283]

Answer:

Carbonates (CO3-2), phosphates (PO4-3) and sulfides (S-2) are insoluble.

The exceptions are the alkali metals and the ammonium ion.

6 0

4 years ago

Read 2 more answers

A radioactive isotope of potassium (k) has a half-life of 20 minutes. if a 43 gram sample of this isotope is allowed to decay fo

Ksenya-84 [330]

Hello!

The half-life is the time of half-disintegration, it is the time in which half of the atoms of an isotope disintegrate.

We have the following data:

mo (initial mass) = 43 g

m (final mass after time T) = ? (in g)

x (number of periods elapsed) = ?

P (Half-life) = 20 minutes

T (Elapsed time for sample reduction) = 80 minutes

Let's find the number of periods elapsed (x), let us see:

$T = x*P$

$80 = x*20$

$80 = 20\:x$

$20\:x = 80$

$x = \dfrac{80}{20}$

$\boxed{x = 4}$

Now, let's find the final mass (m) of this isotope after the elapsed time, let's see:

$m = \dfrac{m_o}{2^x}$

$m = \dfrac{43}{2^{4}}$

$m = \dfrac{43}{16}$

$\boxed{\boxed{m = 2.6875\:g}}\end{array}}\qquad\checkmark$

I Hope this helps, greetings ... DexteR! =)

8 0

4 years ago

A spacecraft is traveling at a speed of 2.3 km/sec. It takes 2.5 minutes to pass a small asteroid. how wide is the asteroid (i.e

lidiya [134]

<u>Answer:</u> The spacecraft traveled 345 km during the given time.

<u>Explanation:</u>

To calculate the distance of spacecraft, we use the equation:

$\text{Velocity}=\frac{\text{Distance}{\text{Time}}$

We are given:

Velocity = 2.3 km/sec

Time = 2.5 mins = 150 sec (Conversion factor: 1 min = 60 sec)

Putting values in above equation, we get:

$\text{Distance}=(2.3km/s\times 150s)=354km$

Hence, the spacecraft traveled 345 km during the given time.

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3 years ago

Fraction to percentage 1

kakasveta [241]

1/12 = 1 : 12 = 0.08333 x 100 = 8.33 %

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3 years ago

Explain how the fire spreading from tree to tree provides a model for conduction.

Inessa05 [86]

the fire spreading is what represents the form of heat transferring from one atom to another within an object and direct contact

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3 years ago

Which is nitrated faster toluene or nitrobenzoate and why​

Which is nitrated faster toluene or nitrobenzoate and why