All categories

3 years ago

Please help me thanks

Chemistry

2 answers:

uysha [10]3 years ago

5 0

Answer:

diamond is the ans

Explanation:

hope it helped!!!

docker41 [41]3 years ago

5 0

Diamond is the answer

You might be interested in

Why is granite better then marble for a statue in a city centre

nasty-shy [4]

Granite is stronger, and it doesn't grow mold in the rain. It also looks better than marble and is easier to carve.

5 0

3 years ago

Read 2 more answers

Why are teeth not minerals?

lozanna [386]

Because your Teeth are composed of calcium, phosphorus, and other minerals. ... But bones are still not as strong as teeth. The hardest part of the human body ,teeth mostly consist of a calcified tissue called dentine. The tooth's dentine tissue is covered in enamel, that hard, shiny layer that you brush.

7 0

3 years ago

Read 2 more answers

What is the percentage yield of O2 if 12.3 g of KClO3 (molar mass 123 g) is decomposed to produce 3.2 g of O2 (molar mass 32 g)

My name is Ann [436]

Answer:

The percentage yield of O2 is 66.7%

Explanation:

Reaction for decomposition of potassium chlorate is:

2KClO₃ → 2KCl + 3O₂

The products are potassium chloride and oxygen.

Let's find out the moles of chlorate.

Mass / Molar mass = Moles

12.3 g / 123 g/mol = 0.1 mol

So ratio is 2:3, 2 moles of chlorate produce 3 mol of oxygen.

Then, 0.1 mol of chlorate may produce (0.1 .3)/ 2 = 0.15 moles

Let's convert the moles of produced oxygen, as to find out the theoretical yield.

0.15 mol . 32 g/ 1mol = 4.8 g

To calculate the percentage yield, the formula is

(Produced Yield / Theoretical yield) . 100 =

(3.2g / 4.8g) . 100 = 66.7 %

8 0

3 years ago

During which phase of mitosis does the cell begin to split into two daughter cells

artcher [175]

Answer:

$\text{Telophase}$

Explanation:

Telophase is the process that separates the duplicated genetic material carried in the nucleus of a parent cell into two identical daughter cells.

$-TheAnimeGirl-$

3 0

2 years ago

Read 2 more answers

What is 786,000 in scientific notation

o-na [289]

The scientific form is $a\times 10^x \left \{ {{a\ \textgreater \ 0} \atop {a\ \textless \ 10}} \right.$ So, the form of scientific notation is $786,000 = 7.86 \times 10^5$

8 0

3 years ago

Read 2 more answers

Please help me thanks​

Please help me thanks