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taurus [48]
3 years ago
9

The largest ruby isnthe world is 10.9 cm long, 9.1 cm wide and 5.8 cm thick, giving

Chemistry
1 answer:
Maslowich3 years ago
6 0
You have to use density=mass/volume formula:


3.97= \frac{x}{575}

Solve for x and you get 2282.75 grams
You might be interested in
Which situation has given to a trait that could be passed on to offspring ?
erma4kov [3.2K]

Answer:

Heredity, also called inheritance or biological inheritance, is the passing on of traits from parents to their offspring; either through asexual reproduction or sexual reproduction, the offspring cells or organisms acquire the genetic information of their parents.

Explanation:

Plss markk me Brainlyist

3 0
3 years ago
A 900.0 mLmL sample of 0.18 MHClO4MHClO4 is titrated with 0.27 MLiOHMLiOH. Determine the pHpH of the solution after the addition
lesya [120]

Answer: pH of the solution after the addition of 600.0 ml of LiOH is 7.

Explanation:

The given data is as follows.

    Volume of HClO_{4} = 900.0 ml = 0.9 L,

   Molarity of HClO_{4} = 0.18 M,

Hence, we will calculate the number of moles of HClO_{4} as follows.

       No. of moles = Molarity × Volume

                             = 0.18 M × 0.9 L

                             = 0.162 moles

Volume of NaOH = 600.0 ml = 0.6 L

Molarity of NaOH = 0.27 M

No. of moles of NaOH = Molarity × Volume

                                     = 0.27 M × 0.6 L

                                     = 0.162 moles

This shows that the number of moles of HClO_{4} is equal to the number of moles of NaOH.

Also we know that,

         HClO_{4} + NaOH \rightarrow NaClO_{4} + H_{2}O

As 1 mole of HClO_{4} reacts with 1 mole of NaOH then all the hydrogen ions and hydroxide ions will be consumed.

This means that pH = 7.

Thus, we can conclude that pH of the solution after the addition of 600.0 ml of LiOH is 7.

3 0
3 years ago
What causes the move from one era to another era?​
kvv77 [185]

Answer:

most likely climate changes and or mass extinction

Explanation:

5 0
2 years ago
Read 2 more answers
A piece of unknown metal with mass 68.6 g is heated to an initial temperature of 100 °C and dropped into 42 g of water (with an
professor190 [17]

Answer:

1.717 J/g °C  ( third option)

Explanation:

A piece of the unknown metal dropped into water this means that Q of metal is equal to Q of the water. We write this equality as follows:

<u>Step 1: writing the formulas:</u>

Q = mc∆T

⇒ -Q(metal) = Q(water)   Because :Metal dropped into water this means that Q of metal is equal to Q of the water.

<em>We can write the formula different :</em>

Mass of metal * (cmetal)(ΔT) = Mass of water *(cwater) (ΔT)

⇒ Here c is the specific heat and depends on material and phase

<em>For this case :</em>

mass of the metal  = 68.6g

mass of the water = 42g

Specific heat of the metal = TO BE DETERMINED

Specific heat of the water = 4.184J/g °C

Initial temperature of the metal = 100 °C  ⇒ Change of temperature: 52.1 - 100

Initial temperature of the water = 20°C  ⇒ Change of temperature:  52.1 - 20

<u />

<u>Step 2: Calculating specific heat of the metal</u>

-(Mass of metal) * (cmetal)*(ΔT)) = (Mass of water) *(cwater)*(ΔT)

-68.6g (cmetal)(52.1 - 100) = 42g (4.184j/g °C) (52.1 - 20)

-68.6g *cmetal * (-47.9) = 42g (4.184j/g °C) *(32.1)

3285.94 * cmetal = 5640.87

cmetal = 5640.87 / 3285.94 = 1,71667 J/g °C

cMetal = 1.717 J/g °C

4 0
3 years ago
Why do atoms share electrons in covalent bonds?
vladimir2022 [97]
To fill the other element's shell.
7 0
3 years ago
Read 2 more answers
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