All categories

3 years ago

Jimmy's science textbook reflects blue light. What color is the book?

Chemistry

2 answers:

Dmitry [639]3 years ago

5 0

I’m not sure but i think blue

Gnom [1K]3 years ago

5 0

Answer: I think the color of the book is blue

Explanation: Only because light is reflecting of of it as blue

You might be interested in

Which two practices are examples of how people use sciense

Semenov [28]

Answer: A: Explaining natural events using facts and data AND B:Developing theories using many lines of evidence

Explanation: trust me.

6 0

2 years ago

Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron? A mole of iron has more atom

grandymaker [24]

Answer:

They both have the same number of atoms

Explanation:

The number that indicates the amount of particles in a compound is the Avogadro's number (NA).

It does not matter the mass of compound we have, If we have 1 mol we will be sure that we are talking about 6.02×10²³ particles

6.02×10²³ represents the amount of atoms in twelve grams of 12-pure carbon and it is considered a reference to measure the amount of all kinds of substances present in a given system.

8 0

3 years ago

Rank the following carboxylic acids from strongest (1) to weakest (4)

Paha777 [63]

Answer:

CH2FCOOH > CH2ClCOOH > CH2BrCOOH > CH3COOH

Explanation:

CH2FCOOH > CH2ClCOOH > CH2BrCOOH > CH3COOH

More electronegative atom of halogen is , stronger acid will be.

6 0

3 years ago

Which of the following elements is represented by the above graphic

kolezko [41]

Answer:

Sulfur

Explanation:

Sulfur has 16 valence electrons, as shown in the diagram.

5 0

2 years ago

What is the osmotic pressure of a solution made from 22.3 g of methanol (MM = 32.04 g/mol) that was added to water to make 321 m

xxMikexx [17]

Answer: The osmotic pressure of a solution is 53.05 atm

Explanation:

To calculate the concentration of solute, we use the equation for osmotic pressure, which is:

$\pi=iMRT$

Or,

$\pi=i\times \frac{\text{Mass of solute}\times 1000}{\text{Molar mass of solute}\times \text{Volume of solution (in mL)}}\times RT$

where,

$\pi$ = osmotic pressure of the solution = ?

i = Van't hoff factor = 1 (for non-electrolytes)

Mass of solute (methanol) = 22.3 g

Volume of solution = 321 mL

R = Gas constant = $0.0821\text{ L.atm }mol^{-1}K^{-1}$

T = temperature of the solution = $25^oC=[273+25]=298K$

Putting values in above equation, we get:

$\pi=1\times \frac{22.3\times 1000}{32.04\times 321}\times 0.0821\text{ L.atm }mol^{-1}K^{-1}\times 298K$

$\pi=53.05atm$

Hence, the osmotic pressure of a solution is 53.05 atm

7 0

3 years ago