CHEMISTRY HIGH SCHOOL

The falling of rain, snow, hail, or ice pellets from the atmosphere is called watering

precipitation

perception

Answers

Answer 1
Answer: Precipitation is when water falls from the clouds in one form or another.
Watering isn't the right term.
Perception is seeing something.
Answer 2
Answer:

Answer:

Precipitation

Explanation:

Related Questions

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In 1803, the British chemist John Dalton proposed several atomic theories. Which one of his theories was later shown to be incorrect?I. Atoms are indivisible and indestructible particles. II. All atoms of the same element are exactly alike. III. Atoms of different elements are different. IV. Atoms combine in specific numerical ratios to form compounds. A. II only B. II & III only C. I & II only
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Which element has 32 protons in its nucleus?

Researchers have now been able to cool substances to absolute zero.
a. True
b. False

Answers

Answer:

The correct option is B) false.

Explanation:

Absolute zero is the point where it is not feasible to cool further.

The lowest possible temperature is 0 kelvin which is also known as absolute zero. In degrees its corresponds to –273.15 degrees Celsius.

it is not possible to reach or cool a substance to absolute zero although nearby temperatures can be reached.

Consider the provided statement.

Researchers have now been able to cool substances to absolute zero is a false statement.

The correct option is B) false.
This Answer Is False.

The element mercury was first discovered on the Sun.
a. True
b. False

Answers

This statement is FALSE. Mercury was not first discovered in the sun. In fact, mercury or quicksilver was discovered by ancient Indians and Chinese even before 2000 BC. Its ores that are called cinnabar are used in traditional Chinese medicines. However, the effectiveness is not yet justified because of the toxicity of the element. Mercury is also used with thermometers both in clinical and lab uses. Nowadays, the use of it in thermometers is gradually disappearing because of its harmful properties.  

how many grams of ca(po4)2 would be produced when 1.5 grams of (nh4)3po4 is reacted with an excess of ca(oh)2

Answers

Molar mass :

(NH₄)₃PO₄ = 149.0 g/mol

Ca₃(PO₄)₂ = 310.17 g/mol

2 (NH₄)₃PO4 + 3 Ca(OH)₂= Ca₃(PO₄)₂ + 6 NH₄OH

2 * 149 g --------- 310.17 g
1.5 g -------------- ?

mass = 1.5 * 310.17 / 2 * 149

mass = 465.255 / 298

= 1.561 g of Ca₃(PO₄)₂

hope this helps!

How many grams of hydrogen peroxide (H2O2) must be added to 1,500 mL of water to produce a concentration of 1.33 m (molal solution)? (Recall that the density of water is 1.0 gram/mL.)

Answers

Given:

1,500 mL of water

1.33 m (molal solution

 

Required:

grams of hydrogen peroxide (H2O2

 

solution:

1.33 molal = 1.33 m = 1.33 moles H2O2/kg water

 

1 gram/liter of water (1 liter/1000 mL) (1500mL)(1 kg/1000g) = 0.0015 kg water

1.33 moles H2O2/kg water (0.0015 kg water) = 0.001995 moles H2O2

 

Molar mass of H2O2 = 34 g/mol

 

0.001995 moles H2O2 (34 g/mol) = 0.068 grams H2O2

How many elements are in a compound that has a formula NiCI2+6H2O?

Answers

They are four elements.

If 200.0 g of copper(II) sulfate react with an excess of zinc metal, what is the theoretical yield of copper?

Answers

Answer:

The theoretical yield of copper is 79.6281 g

Explanation:

CuSO_4+Zn\rightarrow ZnSO_4+Cu

Moles of copper sulfate = (200.0 g)/(159.609 g/mol)=1.2530 mol

According to reaction 1 mol of copper sulfate gives 1 mol of copper .

Then 1.2530 mol of copper sulfate will gives :

(1)/(1)* 1.2530 mol=1.2530 mol of copper .

Mass of 1.2530 mol of copper :

1.2530 mol × 63.55 g/mol = 79.6281 g

The theoretical yield of copper is 79.6281 g
 The theoretical yield of copper is a 78:32 ratio. 
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