1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
frozen [14]
3 years ago
5

Water is placed into a sealed jar and has a mass of 22.0 grams. The jar is placed in the freezer and the water turns to ice. The

jar of ice is measured. The mass should be:
a. Slightly less than 22.0 grams
b. Exactly 22.0 grams
c. Slightly more than 22.0 grams
Chemistry
1 answer:
Serhud [2]3 years ago
6 0

exactly 22.0 grams

because freezing is a physical change not a chemicl change..so nothing is taken away or added

You might be interested in
The metals in Groups 1A, 2A, and 3A ____. a. gain electrons when they form ions c. all have ions with a 1+ charge b. all form io
vagabundo [1.1K]
4A I think I'm sorry if it is wrong
7 0
3 years ago
It is possible for a particular element to have various numbers of neutrons. True False
umka2103 [35]

Answer:

  • <em><u>True</u></em>

Explanation:

Every element is constituted by atoms with the same atomic number, which is the number of protons in their nuclei. So, all the atoms of a same element have the same number of protons.

For instance, the element sodium has atomic number 11, and all its atoms have 11 protons.

The atomic number identifies uniquely every element.

In the atomic nuclei there are protons and neutrons. Neutrons can vary from one atom of a particular element to another atom of the same element. That is what the term isotope accounts for. Isotopes are atoms with the same atomic number and different number of neutrons.

Most elements have different isotopes. The atomic mass of fifferent isotopes of a particular element will differ among them, because the neutrons account for the mass.

7 0
3 years ago
28. If the total pressure of a mixture of four gases (neon, carbon dioxide, oxygen and hydrogen) is 1245 mm
Bingel [31]

Answer:

D) 373 mm Hg.

Explanation:

We can solve this problem by keeping in mind<em> Dalton's law of partial pressures</em>, which states that the total pressure of a mixture of gases is equal to the sum of each gas' partial pressures. In other words, for this case:

  • Total Pressure = Ne Pressure + CO₂ Pressure + O₂ Pressure + H₂ Pressure
  • 1245 mm Hg = Ne Pressure + 145 mm Hg + 228 mm Hg + 499 mm Hg
  • Ne Pressure = 373 mm Hg

The answer is option D) 373 mm Hg.

8 0
3 years ago
Consider the reaction below. 2H2O 2H2 + O2 How many moles of hydrogen are produced when 6.28 mol of oxygen form?
g100num [7]

6.28 mol O2 × 2 mol h2 / 1 mol 02 = 12.56 moles h2

8 0
3 years ago
Why do non metallic elements pull electrons from metallic elements so effectively during a reaction?
Slav-nsk [51]
Non metallic elements pull electrons from metallic elements so effectively during a reaction because they have a tendency to gain electrons and tend to be small in size.
<span>Non metallic elements have higher electronegativities than metals. The atoms of nonmetals  tend to gain electrons in order to acquire a noble gas electron configuration. This gives them a net negative electric charge. </span>
8 0
3 years ago
Other questions:
  • In the covalent compound C3H8 the Greek prefix used to represent the cation is?
    15·2 answers
  • What is the molecular shape of hydrogen?
    12·1 answer
  • The hormone thyroxine is secreted by the thyroid gland and has the formula: C15H17NO4I4. How many milligrams of Iodine can be ex
    8·2 answers
  • There are two different compounds of sulfur and fluorine.
    14·1 answer
  • Which is the main reason cells are replaced in the body?
    11·1 answer
  • a solution of copper sulfate slowly evaporates beautiful blue crystals made Cu(11) and sulfate ions from such that water molecul
    15·1 answer
  • What is the temperature of 0.45 moles of Neon gas at 1920 mm Hg if it occupies 22,400 ml of volume?
    13·1 answer
  • How many mL of methanol would
    5·2 answers
  • The formation of protons over neutrons (thus producing about a 7:1 ratio) was favored in the early universe because:____.
    9·1 answer
  • Calculate the maximum numbers of moles and grams of H₂S that can form when 158 g of aluminum sulfide reacts with 131 g of water:
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!