2 years ago

PLEASE HELP!! ILL MARK BRAINLIST!!

1 answer:

Lynna [10]2 years ago

8 0

Ok I will get a hold on you tomorrow morning to see

You might be interested in

Inessa [10]

Answer:

The heat would flow from the hot solid to the cool solid until all temperatures are near equal.

4 0

3 years ago

Naddika [18.5K]

Awh, why are you sad? :(

8 0

2 years ago

timama [110]

Basicity of an acid is the number of hydrogen ions which can be produced by one molecule of an acid

6 0

3 years ago

Montano1993 [528]

Answer:

2.51 x 10*25 atoms

6 0

3 years ago

hammer [34]

Answer: B) 46.7% Si and 53.3% O

Explanation:

To calculate the mass percent of element in a given compound, we use the formula:

$\text{Mass percent of element}=\frac{\text{Mass of element}}{\text{total mass}}\times 100\%$

Mass of quartz $(SiO_2)$ = 5.05 g

Mass of silicon = 2.36 g

Mass of oxygen = Mass of quartz $(SiO_2)$ - mass of silicon = 5.05g - 2.36 g = 2.69 g

$\text{Mass percent of silicon}=\frac{\text{Mass of silicon}}{\text{total mass of quartz}}\times 100=\frac{2.36}{5.05}\times 100=46.7\%$

$\text{Mass percent of oxygen}=\frac{\text{Mass of oxygen}}{\text{total mass of quartz}}\times 100=\frac{2.69}{5.05}\times 100=53.3\%$

Thus the percentages of silicon and oxygen in quartz are B) 46.7% Si and 53.3% O

6 0

2 years ago

PLEASE HELP!! ILL MARK BRAINLIST!! ​