Greenhouse gases make up what percentage of Earth's atmosphere? A. less than 1% B. between 1% and 5% C. between 5% and 20% D. over 20%

Answers

Answer 1
Answer: the correct answer is C

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When elements bond together or when bonds of compounds are broken and form a new substanceA. Chemical Change B. Energy C. Fireworks D. Chemical Reaction
How might human activities change to compensate for a decrease in water supplies?Humans might build a factory. Humans might build drainage systems. Humans might extract more water from the ground. Human behavior does not change because of the water cycle.
Write a word equation for 2ZnS(s)+3O2(g) -> 2ZnS(s) + 2SO3(g)
Define and explain what an atom is

Sodium hydroxide dissolves in water ....

Answers

n the reaction will be Exothermic, where heat will be released. .

Which of the following will most likely happen if the pancreas does not produce sufficient glucagon?1. Blood sugar will decrease because glucagon increases blood sugar when it falls too low.

2. Blood sugar will increase because glucagon increases blood sugar when it falls too low.

3. Blood sugar will decrease because glucagon lowers blood sugar when it rises too high.

4. Blood sugar will increase because glucagon lowers blood sugar when it rises too high.

Answers

Answer: 1 Blood sugar will decrease because glucagon increased blood sugar when it falls too low

Answer:

1. Blood sugar will decrease because glucagon increases blood sugar when it falls too low.

How many atoms does a molecule of sodium chloride contain?

Answers

2, for every one Na you will have 1 Cl.

An electric field is created by particles thatA) are moving
B) have a charge.
C) are radioactive.
D) are electrically neutral.

Answers

To create an electric field, first of all, particles have to have electric charge. 

Final answer:

An electric field is created by particles that have a charge. These can be either positively or negatively charged. The direction of the field is away from positive charges and towards negative charges.

Explanation:

An electric field is generally created by particles that have a charge. These particles can either be positively or negatively charged. The direction of the electric field is always directed away from positively charged particles and towards negatively charged particles. The magnitude (or strength) of the electric field at a point in space is defined as the force that a positive test charge would experience if it was placed at that point divided by the magnitude of the test charge. For example, if we place a positive test charge in the field produced by another positive charge, the test charge will be repelled - illustrating the direction of the electric field. Hence, even though moving charged particles and radioactive particles can create an electric field, the most generalized answer to this question is that an electric field is created by particles that have a charge regardless of their state of motion or radioactivity.

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A typical carbon atom has six protons, six neutrons, and six electrons. Which of these has the least amount of mass?A) one Proton
B) one Neutron
C) six Electrons
D) These masses are too tiny to measure

Answers

Answer:

C

Explanation:

Answer:

six electrons

Explanation:

Electrons have almost virtually no mass and much less than a proton and neutron.  

(a neutron and electron have about 1 amu while electrons have 0.000548 amu)

C2H6 + 7O2 ---> 6H2O + 4CO2 is it balanced

Answers

(2)C2H6+ 14 O2-----> (6)H20 + 4CO2