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
bogdanovich [222]
3 years ago
8

When placed in a freezer , liquid water turns into ice . What best describes this change ?

Chemistry
2 answers:
My name is Ann [436]3 years ago
5 0
This is a physical change
GREYUIT [131]3 years ago
4 0

Answer:

Freezing

Explanation:

liquid changing to a solid = Freezing

You might be interested in
How many electrons in an atom can have each of the following quantum number or sublevel designations?
Karo-lina-s [1.5K]

Answer: (a) 2 (b) 6 (c) 14

Explanation:

In the Azimuthal quantum number(l) electrons in a particular subshell (such as s, p, d, or f) are defined by values of l (0, 1, 2, or 3).

s is l=0, p is l=1, d is l=2, f is l=3.

The magnetic quantum number (ml)  The value of ml can range from -l to +l, including zero. Thus the s, p, d, and f subshells contain 1, 3, 5, and 7 orbitals each, with values of m within the ranges 0, ±1, ±2, ±3 respectively. Each shell can have 2 x l + 1 sublevels, and each of these sublevel can accommodate up to two electrons.

(a) n=2, l=1, ml=0. If l=1 then 2 x 1+ 1=3 sublevels, 3*2=6 electrons. When l=1, ml =-1,0,+1, ml=0  accommodate two(2)electrons

(b) 5p. p is l=1  If l=1 then 2 x 1+ 1=3 sublevels, 3*2= electrons. This means in the 5 shell, the p orbital has 3 subshell and accommodate 6 electrons.

(c) n = 4, l = 3 if l=3 then 2 x 3+ 1=7 sublevel 7*2=14 electrons. This means the in the 4 shell, the f orbital has 7 subshell and accomdate 14 elections.

7 0
2 years ago
How many grams of oxygen gas are required to produce 65.75 grams of steam?
Nana76 [90]

Answer:

The mass of oxygen gas required to produce 65.75 grams of steam is approximately 162.2 grams

Explanation:

From the question, we have the following chemical reaction equation;

2C₃H₁₈(l) + 25O₂ (g) → 16CO₂(g) + 18H₂O (g)

The molar mass of oxygen, O₂ = 32 g/mol

The molar mass of steam, H₂O = 18.01528 g/mol

25 moles of oxygen are required to produce 18 moles of steam

Therefore, according to  Proust's law of definite proportions;

(32 × 25) g of oxygen are required to produce (18 × 18.01528) g of steam

65.75 g of steam will be produced by (32 × 25)/(18 × 18.01528) × 65.75 g ≈ 162.2 g of oxygen O₂.

3 0
2 years ago
How can you find the number of neutrons that are in an atom of an element
Temka [501]

Answer:

You just have to take the periodic table of the elements, take the element that interests you. Then, you look at the formula of the element, at the top left you find the number of neutrons and protons and at the bottom left you find the number of protons. Then you just have to make the number from the top left minus the number from the bottom left.

Explanation:

4 0
3 years ago
Describe several main ideas in chemistry
12345 [234]
Matter.

A force of attraction that holds atom together 
<span>When atoms react they form a chemical bond which is defined as a force of attraction that holds atom together. A force of attraction is defined as a kind of force that draws two or more objects together regardless of distance. There are two major categories of forces of attraction, one is intramolecular and intermolecular. Intramolecular forces is the presence of forces in atoms internally. While intermolecular is the force by which the force that is existent in two or more elements. </span>
7 0
3 years ago
What coefficients would balance the following equation?<br><br> __C2H6 + __O2 → __CO2 + __H2O
lina2011 [118]
2C2H6 + 7O2 → 4CO2 + 6H2O
3 0
2 years ago
Other questions:
  • 5.15 Carbon steel (AISI 1010) shafts of 0.1-m diameter are heat treated in a gas-fired furnace whose gases are at 1200 K and pro
    12·1 answer
  • A buffer is prepared by mixing 204.0 mL of 0.452 mol/L hydrochloric acid (HCI) and 500.0 mL of 0.400 mol/L sodium acetate (NaCHC
    14·1 answer
  • One _______ is the amount of time needed for half of a given amount of radioisotope to decay into its stable daughter product.
    15·1 answer
  • Entropy means that _________.A. the quantity of usable energy declines with each transformationB. energy can be neither created
    15·1 answer
  • Why is coal not a mineral?
    5·2 answers
  • helium gas in a 2.00 L cylinder is under 1.12 atm pressure. At 36.5°C that same gas sample has a pressure of 2.56 atm. What was
    15·1 answer
  • A3B8 + C2 ---&gt; AC2 +
    8·1 answer
  • Many electrical power plants use fossil fuels, a non-renewable resource to produce electricity?
    13·1 answer
  • Ok, I need helpies! .__.
    11·1 answer
  • How can we show the data that is collected
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!