The first medical encyclopedia was written by an Arab scholar. Please select the best answer from the choices provided T F

Answer:

Common (industrial) uses for cadmium today are in batteries, alloys, coatings (electroplating), solar cells, plastic stabilizers, and pigments

Answer:

62. 5

Explanation:

Use P1V1=P2V2

100 × 2.5 =250 /4=62.5

Explanation:

As we know that chloride ion is halogen. So it has seven valence electrons in its valence shell. Hence it gains one electron from others during chemical reaction to be stable. So Chloride ion have a negative charge of -1.

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Answer:

D

Explanation:

Hope it helps

#CarryOnLearning

Answer:1 answer number 1

Explanation:

Answer:

A)20.0grams

Explanation:

Answer:

10

Explanation:

Answer:

because Sulphur is written as S₂

Explanation:

Answer:

opción c es la respuesta correcta espero que te ayude

Answer:

760ml of water

Explanation:

Answer: 800mL

Explanation:

20% of 1000mL is 200. 1000mL - 200mL is 800mL

Answer: The value of [tex]K_{b}[/tex] for chloroform is [tex]3.62^{o}C/m[/tex] when 0.793 moles of solute in 0.758 kg changes the boiling point by 3.80 °C.

Explanation:

Given: Moles of solute = 0.793 mol

Mass of solvent = 0.758

[tex]\Delta T_{b} = 3.80^{o}C[/tex]

As molality is the number of moles of solute present in kg of solvent. Hence, molality of given solution is calculated as follows.

[tex]Molality = \frac{no. of moles}{mass of solvent (in kg)}\\= \frac{0.793 mol}{0.758 kg}\\= 1.05 m[/tex]

Now, the values of [tex]K_b[/tex] is calculated as follows.

[tex]\Delta T_{b} = i\times K_{b} \times m[/tex]

where,

i = Van't Hoff factor = 1 (for chloroform)

m = molality

[tex]K_{b}[/tex] = molal boiling point elevation constant

Substitute the values into above formula as follows.

[tex]\Delta T_{b} = i\times K_{b} \times m\\3.80^{o}C = 1 \times K_{b} \times 1.05 m\\K_{b} = 3.62^{o}C/m[/tex]

Thus, we can conclude that the value of [tex]K_{b}[/tex] for chloroform is [tex]3.62^{o}C/m[/tex] when 0.793 moles of solute in 0.758 kg changes the boiling point by 3.80 °C.

Answer:

100.4mL

Explanation:

Using the following formula:

C1V1 = C2V2

Where;

C1 = initial concentration (M)

C2 = final concentration (M)

V1 = initial volume (mL)

V2 = final volume (mL)

According to the information in this question,

C1 = 1.50M

V1 = ?

C2 = 9.65 M

V2 = 15.6 mL

Using C1V1 = C2V2

V1 = C2V2/C1

V1 = (9.65 × 15.6) ÷ 1.5

V1 = 150.54 ÷ 1.5

V1 = 100.36 mL

Approximately, V1 = 100.4mL

Answer:

mesosphere

I hope this helps a little bit.

Answer:

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➳The molar mass of copper (I) carbonate is 187.1 g/mol

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Answer:

25%.

Explanation:

In the F1 generation, the yellow colour is dominant so 75% of the seeds are yellow colour while on the other hand, 25% seeds are green in colour due to recessive allele. In the F1 generation, the ratio of dominant to recessive allele is 3:1. So on the basis of this 3:1 ratio we can say that there is 75% of yellow colour seeds and 25% of green colour seeds in the population of F1 generation.

Answer:

2260 J

Explanation:

For water at its boiling point of 100 ºC, the heat of vaporization is 2260 J g-1. This means that to convert 1 g of water at 100 ºC to 1 g of steam at 100 ºC, 2260 J of heat must be absorbed by the water.

Explanation:

It explodes when a spark is present.. letter D

Answer:

A. It is flammable.

Explanation:

physical property is a characteristic of matter that is not associated with a change in its chemical composition. Familiar examples of physical properties include density, color, hardness, melting and boiling points, and electrical conductivity.

Answer:

gO₂ = 32.32 g

Explanation:

In this case, let's write the general equation:

2H₂ + O₂ -------> 2H₂O

In this case, we can use the 1° law, which is mass conservation. If the product has 36.36 g of water, then in the reactants we should have the same 36.36 g.

According to this, we already have 4.04 of hydrogen, then the remaining to reach the 36.36 g would be:

gO₂ = 36.36 - 4.04

Hope this helps

Explanation:

C5H12 + 8O2 → 5CO2 +6H2O

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Answer:

13

Explanation:

Answer:

Option C

Explanation:

The new method must support the law of definite proportions which means that if one mole of compound is distributed percentage wise then the sum of % share of each element must be equal to one mole of compound and this percentage distribution always remains the same in all conditions

Hence, option C is correct

Answer:

a

3.92

Explanation:

Explanation:

can you tell us what do want help with?

Answer:

Ok I will give you answer

Answer:

Molality = 9.498 mol  k g − 1

Explanation:

A final way to express the concentration of a solution is by its molality. The molality ( m ) of a solution is the moles of solute divided by the kilograms of solvent. A solution that contains 1.0 mol of NaCl dissolved into 1.0 kg of water is a “one-molal” solution of sodium chloride.

molality = number of moles of solute/ mass of solvent in kg

number of moles of KI = mass of KI / molar mass of KI  

number of moles of KI = 9.49.8 g / 1.00 g  m o l − 1

number of moles of KI = 9.498 moles  

molality = 9.498 moles / 1kg  

molality = 9.498 mol  k g − 1

Answer:

vapourisation can occur from solid or liquid into a gas but evaporation is straight from a liquid and is often below boiling temperature while vapourisation is often above boiling temperature

Answer:

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•It takes a season to create a hybrid, and about 15 years to create a Plant variety.

may this helps you

hope it's correct

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Answer:

D.) The Law of conservation of Matter

Explanation: The popcorn goes into the microwave and since matter cannot be created or destroyed the mass stays the same.

Answer:

aki you there how are you

Explanation: