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
sweet [91]
3 years ago
10

Is it always possible to identify something as an element compound pure substance or mixture

Chemistry
1 answer:
weqwewe [10]3 years ago
7 0
Is it always possible to identify something as an element<span>, </span>compound<span>, </span>pure substance or mixture<span> just by looking at it? </span>
You might be interested in
Thermochromic ink, for which new uses are appearing in the fashion industry, is able to do what?
neonofarm [45]
<span>Thermochromic ink is a  kind of material that takes advantage of thermochromism. In chemistry, this is where a substance changes hues when exposed varying kinds of temperature. In the fashion industry, these inks are used for creating different kinds of accessories, clothing and bag designs. </span>
6 0
3 years ago
Vinegar produces carbon dioxide gas when combined with baking soda. Physical or chemical property?
Bas_tet [7]

Answer:

it's a chemical property

5 0
3 years ago
When comparing Potassium (K) and Calcium (Ca) you must compare?
Rom4ik [11]
Vitamin K and potassium are essential micronutrients the body needs to develop and function properly. The two share some things in common, but they’re not the same.

Each has a unique set of properties and purposes. Unlike vitamin K, potassium is not a vitamin. Rather, it’s a mineral.

On the periodic table, the chemical symbol for potassium is the letter K. Thus, people sometimes confuse potassium with vitamin K.

This article highlights some of the main similarities and differences between vitamin K and potassium.
8 0
2 years ago
What is the freezing point of a solution of 465 g of sucrose c12h22o11 dissolved in 575 ml of water?
Amanda [17]

Answer:

The freezing point of the solution is - 4.39 °C.

Explanation:

We can solve this problem using the relation:

<em>ΔTf = (Kf)(m),</em>

where, ΔTf is the depression in the freezing point.

Kf is the molal freezing point depression constant of water = -1.86 °C/m,

density of water = 1 g/mL.

<em>So, the mass of 575 mL is 575 g = 0.575 kg.</em>

m is the molality of the solution (m = moles of solute / kg of solvent = (465 g / 342.3 g/mol)/(0.575 kg) = 2.36 m.

<em>∴ ΔTf = (Kf)(m</em>) = (-1.86 °C/m)(2.36 m) = <em>- 4.39 °C.</em>

<em>∵ The freezing point if water is 0.0 °C and it is depressed by - 4.39 °C.</em>

<em>∴ The freezing point of the solution is - 4.39 °C.</em>

6 0
3 years ago
Sodium sulfate reacts with carbon to produce the products sodium sulfide and carbon monoxide. Identify the reducing agent in the
Maslowich
The reducing agent will itself be oxidized.
The oxidation number of carbon goes form 0 to +2. Therefore, it is the reducing agent.
6 0
3 years ago
Read 2 more answers
Other questions:
  • A) Moles of CO2 required to inflate 160-L front passenger-side air bag at room temperature and pressure
    14·1 answer
  • Static electricity is the buildup of electric charges in
    5·1 answer
  • What is the concentration of each of these solutions expressed as ppm?
    10·1 answer
  • The point on a magnet Where magnet effect is strongest is called ​
    15·1 answer
  • Calculate the magnitude and direction (i.e., the angle with respect to the positive H-axis, measured positive as counter-clockwi
    14·1 answer
  • What is the pH of a solution that<br> contains [H+]=3.18 x 10^-8 M?
    9·1 answer
  • Question 6 of 10
    5·1 answer
  • What is the atomic number for an element whose mass number is 78,
    7·2 answers
  • What are the common properties of the following element groups:
    14·1 answer
  • AP CHEM answer and i will give brainliest, image attached
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!