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3 years ago

What is scientific meaning for emerge?

Chemistry

2 answers:

Likurg_2 [28]3 years ago

5 0

To move out /come out or away from something

cluponka [151]3 years ago

3 0

When we're talking about something that's emerging, we're talking about a characteristic of a certain object we're observing which couldn't be directly inferred from its known constitutional parts.

If we know water is made out of oxygen and two hydrogen molecules, we cannot predict certain qualities it has. What we need to know and what is important is that we also know the interaction between the constitutional parts of our object so that we can properly explain the new observed characteristic.

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I'M ON A TIME LIMIT WILL MARK BRAINLIEST!

Bingel [31]

Answer:

it will not dissolve

Explanation:

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4 years ago

Read 2 more answers

In a laboratory, a student finds the boiling point of water at sea level to be 102.0 °C. The

Genrish500 [490]

Answer:

One reason, that water did not boil at 100 C could be the atmospheric pressure

Calculate the percent error for each sample from the theoretical 100°c

Percent error ( 102C) = (102-100/ 100) *100

= 2% error

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3 years ago

In an atom, electrons ____.

Snowcat [4.5K]

In an atom electron travels outside the nucleus.

electrons travels around the nucleus in orbital but it is impossible to know both the speed and location of electron at the same time. Unlike the proton and neutrons which are located inside the nucleus electrons are located outside the nucleus.

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3 years ago

Consider the reaction. 2 HBr(g) ¡ H2(g) + Br2(g) a. Express the rate of the reaction in terms of the change in concentration of

Studentka2010 [4]

Answer :

(A) The rate expression will be:

$Rate=-\frac{1}{2}\frac{d[HBr]}{dt}=+\frac{d[H_2]}{dt}=+\frac{d[Br_2]}{dt}$

(B) The average rate of the reaction during this time interval is, 0.00176 M/s

(C) The amount of Br₂ (in moles) formed is, 0.0396 mol

Explanation :

Rate of reaction : It is defined as the change in the concentration of any one of the reactants or products per unit time.

The given rate of reaction is,

$2HBr(g)\rightarrow H_2(g)+Br_2(g)$

The expression for rate of reaction :

$\text{Rate of disappearance of }HBr=-\frac{1}{2}\frac{d[HBr]}{dt}$

$\text{Rate of disappearance of }H_2=+\frac{d[H_2]}{dt}$

$\text{Rate of formation of }Br_2=+\frac{d[Br_2]}{dt}$

Part A:

The rate expression will be:

$Rate=-\frac{1}{2}\frac{d[HBr]}{dt}=+\frac{d[H_2]}{dt}=+\frac{d[Br_2]}{dt}$

Part B:

$\text{Average rate}=-\frac{1}{2}\frac{d[HBr]}{dt}$

$\text{Average rate}=-\frac{1}{2}\frac{(0.512-0.600)M}{(25.0-0.0)s}$

$\text{Average rate}=0.00176M/s$

The average rate of the reaction during this time interval is, 0.00176 M/s

Part C:

As we are given that the volume of the reaction vessel is 1.50 L.

$\frac{d[Br_2]}{dt}=0.00176M/s$

$\frac{d[Br_2]}{15.0s}=0.00176M/s$

$[Br_2]=0.00176M/s\times 15.0s$

$[Br_2]=0.0264M$

Now we have to determine the amount of Br₂ (in moles).

$\text{Moles of }Br_2=\text{Concentration of }Br_2\times \text{Volume of solution}$

$\text{Moles of }Br_2=0.0264M\times 1.50L$

$\text{Moles of }Br_2=0.0396mol$

The amount of Br₂ (in moles) formed is, 0.0396 mol

8 0

3 years ago

Calculate the volume of compound X needed to ma ke a 15 ug/ml treatment solution in 0.1 L of 1x PBS using a stock solution that

zalisa [80]

Answer:

6 μL

Explanation:

To prepare a solution by a concentrated solution, we must use the equation:

C1xV1 = C2xV2, where C is the concentration, V the volume, 1 is the initial solution and 2 the final solution.

The final concentration must be 15 μg/mL with a volume of 0.1L or 100 mL. The concentration of the stock solution is 250 mg/mL. 1 mg has 1000 μg, so the concentration is 250000 μg/mL. Then:

250000xV1 = 15x100

V1 = 15/2500

V1 = 0.006 mL = 6 μL

7 0

3 years ago