Back page anwsers of adobe sisters recap sheet

A certain chemical reaction releases 31.0 kj/g of heat for each gram of reactant consumed. How can you calculate what mass of re

Aleksandr-060686 [28]

Answer:

See explanation.

Explanation:

Hello!

In this case, since we know the heat of reaction per gram of reactant and we should know the total energy of reaction, but it is not there, we are going to assume it is 1200 J as usual in these problems, so you can change it to whatever your given heat is.

In such a way, we set up the math as shown below:

$m= 1200J*\frac{1kJ}{1000J}*\frac{1g}{31.0kJ}$

Which results:

$m=0.0387g$

Best regards!

7 0

3 years ago

Which arrow or arrows represent reactions that demonstrate a conservation of mass and energy? Explain your answer

Kruka [31]

Answer:

i need a picture of ur question

Explanation:

7 0

3 years ago

The Blue Giant of the Orient is the largest faceted sapphire in the world, with a mass of

vfiekz [6]

The volume of this sapphire in cubic centimeters is 24.4 cm^3

We have the following information;

Mass of the Blue Giant = 486.52 carats

Density of the blue giant = 3.98 g/cm3

Volume of the blue giant = ?

Since the density is given in g/cm3, we must convert the mass to grams.

We have the conversion factor; 5 carats = 1 g

So;

If 5 carats make 1g

486.52 carats make 486.52 carats × 1g/ 5 carats

= 97.30 g

Since;

Density = mass/volume

Volume = Mass/Density

Volume = 97.30 g/3.98 g/cm3

Volume = 24.4 cm^3

Learn more: brainly.com/question/6034174

5 0

3 years ago

Which statements describe both male and female reproductive systems? Select three options

worty [1.4K]

Answer:

A:The reproductive system produces hormones.

B:The reproductive system transports reproductive cells.

C:The reproductive system produces reproductive cells.

Explanation:

A:The reproductive system produces hormones. : The reproductive organs ovaries in females and testes in males produces hormones. The ovaries produce estrogen and progesterone and testes produce testosterone.

B:The reproductive system transports reproductive cells. : The ovaries in females transfers an egg into the fallopian tube and testes in males secrete sperms at the time of copulation the fertilization of egg and sperm leads to the development of zygote the precursor of new life.

C:The reproductive system produces reproductive cells.: The ovaries undergo oogenesis and in testes spermatogenesis takes place to develop egg and sperms respectively.

Explanation:

7 0

2 years ago

The distance between the centers of the two oxygen atoms in an oxygen molecule is 1.21 x 10-8 cm. What is this distance in inche

liq [111]

Answer:

The distance between the centers of the two oxygen atoms in an oxygen molecule is $4.76\times 10^{-9}inch$

Explanation:

We know, 1 inch = 2.54 cm

So, $1.21\times 10^{-8}cm=(1.21\times 10^{-8})\times (\frac{1}{2.54})inch$

= $4.76\times 10^{-9}inch$

So the distance between the centers of the two oxygen atoms in an oxygen molecule is $4.76\times 10^{-9}inch$

6 0

3 years ago