The two elements silicon and oxygen, taken together, make up about what percent of Earth's crust by ...

Author Question: The two elements silicon and oxygen, taken together, make up about what percent of Earth's crust by ... (Read 98 times)

tatyanajohnson

Hero Member
Posts: 569

on: Jul 28, 2018

The two elements silicon and oxygen, taken together, make up about what percent of Earth's crust by mass?
a. 25
b. 64
c. 50
d. 75

Question 2

If atoms unite by transfer of electrons, they form
a. an organic compound.
b. an ionic compound.
c. a polar molecule.
d. a covalent compound.

isabelt_18

Sr. Member
Posts: 342

Reply #1 on: Jul 28, 2018

Answer to Question 1

d

Answer to Question 2

b

Need homework help now?

Ask unlimited questions for free

Ask a Question

tatyanajohnson

Hero Member
Posts: 569

Reply #2 on: Jul 28, 2018

Thank you!

isabelt_18

Sr. Member
Posts: 342

Reply #3 on: Jul 28, 2018

Always glad to help...

« previous next »

Did you know?

Most strokes are caused when blood clots move to a blood vessel in the brain and block blood flow to that area. Thrombolytic therapy can be used to dissolve the clot quickly. If given within 3 hours of the first stroke symptoms, this therapy can help limit stroke damage and disability.

Did you know?

Famous people who died from poisoning or drug overdose include, Adolf Hitler, Socrates, Juan Ponce de Leon, Marilyn Monroe, Judy Garland, and John Belushi.

Did you know?

There are major differences in the metabolism of morphine and the illegal drug heroin. Morphine mostly produces its CNS effects through m-receptors, and at k- and d-receptors. Heroin has a slight affinity for opiate receptors. Most of its actions are due to metabolism to active metabolites (6-acetylmorphine, morphine, and morphine-6-glucuronide).

Did you know?

People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

Did you know?

Illness; diuretics; laxative abuse; hot weather; exercise; sweating; caffeine; alcoholic beverages; starvation diets; inadequate carbohydrate consumption; and diets high in protein, salt, or fiber can cause people to become dehydrated.

The location of the variable fuel sensor can vary, depending on the make and model of vehicle, but ...

Testing a dual cell wideband oxygen sensor can be done using a voltmeter or a scope. The meter ...

Many fuel-control oxygen sensors are located in the exhaust manifold near its outlet so that the ...

Using the cursors on the oscilloscope, the high- and low-oxygen sensor values can be displayed on ...

Earth’s Spheres

Meiosis is used to make sperm and egg cells. A shows a simplified version and B shows a detailed ver

Author Question: The two elements silicon and oxygen, taken together, make up about what percent of Earth's crust by ... (Read 98 times)

Related Topics

Need homework help now?