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vladimir1956 [14]
3 years ago
13

Please help i don’t know what to say

Chemistry
2 answers:
grigory [225]3 years ago
7 0
Groundwater varies between each year and state. Although from this map it seems as though the southeast part of the US contains more groundwater than other states. While the southwest and west side of the US does not contain as much groundwater as other states.
likoan [24]3 years ago
3 0

Answer:

Explanation:

Groundwater spread over the years

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Which of the following properties of water allows an insect to “climb” up a tube? Capillary action Cohesion Adhesion Density
Alchen [17]
I think the answer is capillary action.
8 0
4 years ago
Read 2 more answers
6. Para dos átomos que llamaremos x e y, justifica (en al menos dos
lesantik [10]

La primera instrucción es verdadera, la segunda es falsa porque dos elementos no pueden tener el mismo número de masa (excepto azufre y argón) Estrictamente hablando, No. Puede tener 2 (o más) elementos con el mismo 'número de masa atómica', lo que significa que el número total de nucleones (neutrones de protones) es el mismo. En el ejemplo dado en una respuesta anterior, el azufre tiene un isótopo con el número de masa atómica 36 (16p 20n) y Argón también tiene un 36 (18p 18n). La tercera declaración es verdadera, si tiene un número diferente de neutrones, entonces es un isótopo. La cuarta declaración es falso. Espero que esto te ayude.

5 0
3 years ago
Generally how does the first ionization energy vary as the atomic number increases going across a period
Vlad1618 [11]

Across a period I.E increases progressively from left to right

Explanation:

The trend of the first ionization energy is such that across a period I.E increases from left to right due to the decreasing  atomic radii caused by the increasing nuclear charge. This not compensated for by successive electronic shells.

  • Ionization energy is a measure of the readiness of an atom to lose an electron.
  • The lower the value, the easier it is for an atom to lose an electron.
  • Elements in group I tend to lose their electrons more readily whereas the halogens hold most tightly to them.
  • The first ionization energy is the energy needed to remove the most loosely bonded electron of an atom in the gaseous phase.

Learn more:

Ionization energy brainly.com/question/6324347

#learnwithBrainly

3 0
4 years ago
How many moles is 3.52 x 10²⁴ molecules of water?
sveta [45]

Answer:

5.85 moles H2O

Explanation:

(3.52 x 10^24 molecules H2O) / (1)  x (1 mole) / (6.02 x 10^23 molecules) = 5.85 moles H2O

6 0
3 years ago
A gas company in Massachusetts charges $1.30 for 15.0 ft^3 of natural gas. (a) Convert this rate to dollars per liter of gas. (b
aleksley [76]

Answer:

Explanation:

a ) 15( ft)³ = 15 ( 12 inch )³  = 15 x 12 x 12 x 12 (inch)³ = 25920 (inch)³

=25920( 2.54 cm)³ = 25920 x 2.54 x 2.54 x 2.54 cm³ =424752.7 cc

424752.7/1000 litre = 424.75 liter

424.75 liters cost 1.30 dollars

1 liter costs    1.3/424.75 = 3.06 x 10⁻³ dollars.

So rate

= 3.06 x 10⁻³ dollars/liter

b ) one liter of water takes 0.304 ft³ of gas

2.1 liter will take 0.304 x 2.1 = 0.6384 ft³ of gas

cost = 1.3 x .6384 / 15 = 0.055328 dollar = 55.33 x 10⁻³ dollar.

7 0
3 years ago
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