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3 years ago

How can we differentiate between sodium bromide and sodium iodide

Chemistry

1 answer:

MA_775_DIABLO [31]3 years ago

6 0

Answer:

Sodium bromide is a chemical combination of bromine and iodine while sodium iodide is made up of sodium and iodine,you can also look at the difference in terms of boiling and melting poins

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After creating a Beer's Law plot using standard solutions of Q, you determined the slope of Beer's Law to be 0.598 M-1. Your unk

Mashutka [201]

Answer:

$C=0.247~M$

Explanation:

We have to start this question with Beer's Law, $A=E*b*C*$ . On this equation we will have:

A=Absorbance

E=Molar absorption coefficient

b= Optical path

C=Concentration

So, the question is: what values of this equation we know?. If we check the question we have the absorbance value "0.148" additionally we have the slope of the plot, this slope is the molar absorption coefficient, therefore E=0.598 M-1, finally we have also the optical path. The optical path is 1 cm for all devices, so b=1 cm. With all these values we can calculate the concentration "C".

$C=\frac{A}{b*E}$

$C=\frac{0.148}{1*0.598}$

$C=0.247~M$

So, we will have a concentration of 0.247 M

I hope it helps!

4 0

3 years ago

If you are cooking bread, and you weigh the dough before baking and weigh the bread after baking, but they weigh 2 different amo

Nana76 [90]

Answer:

jayfeather friend me

Explanation:

In a toasty kitchen, your dough may proof in as little as an hour (or less!). When the temperatures dip, it can take much longer—upwards of two or even three hours.

3 0

3 years ago

The specific heats and densities of several materials are given below:

krek1111 [17]

Answer: The change in temperature is 84.7°C

Explanation:

To calculate the change in temperature, we use the equation:

$q=mc\Delta T$

where,

q = heat absorbed = 1 kCal = 1000 Cal (Conversion factor: 1 kCal = 1000 Cal)

m = mass of steel = 100 g

c = specific heat capacity of steel = 0.118 Cal/g.°C

$\Delta T$ = change in temperature = ?

Putting values in above equation, we get:

$1000Cal=100g\times 0.118Cal/g.^oC\times \Delta T\\\\\Delta T=\frac{1000}{100\times 0.118}=84.7^oC$

Hence, the change in temperature is 84.7°C

6 0

3 years ago

Równania reakcji chemicznej

Aliun [14]

Answer:

Reakcja chemiczna jest opisana równaniem chemicznym, wyrażeniem określającym tożsamość i ilość substancji biorących udział w reakcji. Równanie chemiczne pokazuje początkowy związek (związki) - reagenty - po lewej stronie, a końcowy związek (związki) - produkty - po prawej stronie, oddzielone strzałką.

Explanation:

5 0

4 years ago

Find the molar mass of oxygen gas

Mazyrski [523]

Molar mass of oxygen = mass of an oxygen atom×2 = 15.999×2 ≈16×2 = 32

6 0

4 years ago