quartz (SiO2) is a compound. A compud is the combination of two or more elements. It is a compound because three elements are formed, the silicon and the two atoms of oxygen.

3 0

3 years ago

An experiment in a general chemistry laboratory calls for a 2.00 M solution of HCL. How many mL of 11.9 M HCL would be required

Annette [7]

Answer: The volume of concentrated solution required is 42 mL

Explanation:

To calculate the molarity of the diluted solution, we use the equation:

$M_1V_1=M_2V_2$

where,

$M_1\text{ and }V_1$ are the molarity and volume of the concentrated solution

$M_2\text{ and }V_2$ are the molarity and volume of diluted solution

We are given:

$M_1=11.9M\\V_1=?mL\\M_2=2.0M\\V_2=250mL$

Putting values in above equation, we get:

$11.9\times V_1=2.0\times 250\\\\V_1=42mL$

Hence, the volume of concentrated solution required is 42 mL

3 0

3 years ago

What distinguishes a neutral atom from an ion

Aliun [14]

will they contain the same number of protons as electrons. By the meaning, an "ion" is an electrically charged particle produced by either removing electrons from the neutral atom to give a positive ion or adding electrons to a neutral atom to give a negative" ion".
hope i helped :)

6 0

3 years ago

Explica brevemente cuidado del aparato digestivo

kirill115 [55]

Answer:

For better digestive health, follow these simple tips:

Eat a high-fiber diet. ...

Be sure you're getting both soluble and insoluble fiber. ...

Minimize your intake of foods high in fat. ...

Select lean meats. ...

Add probiotics to your diet. ...

Follow a regular eating schedule. ...

Drink plenty of water.

Explanation:

6 0

3 years ago