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
Makovka662 [10]
2 years ago
11

50 Two chemicals are mixed and sold in a plastic bag The bag begins to inflate and becomes hot to the touch. what evidence suppo

rts that a chemical reaction occurred​
Chemistry
1 answer:
Gennadij [26K]2 years ago
7 0

Answer:

info Incorrect

Explanation:

info Incorrect

You might be interested in
True or False<br> Helium belongs to Noble Metals
Lostsunrise [7]

Answer:

This answer is "True"

6 0
3 years ago
Read 2 more answers
key A 0.150 M sodium chloride solution is referred to as a physiological saline solution because it has the same concentration o
lorasvet [3.4K]

Answer:

2.41065 grams

Explanation:

Here we have to apply molarity, particularly in reference to the equation molarity = moles of solute / volume. I would like to rewrite this formula, but with respect to the units - grams = moles / Liters,

We can use molarity to determine the number of moles. After doing so, we can determine the mass of the solute with respect to the formula moles = mass / molar mass. The molar mass of NaCl is 58.44 grams.

_______________________________________________________

275 mL = 0.275 L,

Number of Moles of NaCl = 0.150 * 0.275 = 0.04125 moles,

Mass = 0.04125 * 58.44 = 2.41065 grams,

Solution - Mass of NaCl = 2.41065 grams

<u><em>Hope that helps!</em></u>

5 0
2 years ago
Read 2 more answers
The sum of pH and pOH for any aqueous solution equals .
Vsevolod [243]

Answer:

pH is calculated by taking negative logarithm of hydrogen ion concentration. Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH equal to 7. Thus the sum of pH and pOH is 14

Explanation:

6 0
3 years ago
Match the following items. Match the items in the left column to the items in the right column. 1. general or nonspecific observ
ivann1987 [24]
when column B is like the attached pic: (missing in your question)

so the matches will be like that:

1- Qualitative :

as Qualitative is a general or nonspecific observation, they also don't require

measurements and even can't be measured, that is because of the reality is

being approximated only. It  describes qualities and uses opinion

2- Hypothesis : 

as a hypothesis is an educated guess quantitative, and it is a prediction stated

in " If and then " form. a hypothesis to be valid need a research such as:

-Encyclopedia & state and local research facilities & scientific journals.

3- Direct relationship:

as a Direct relationship is when two variable change in the same direction,

and one remaining larger than the other by the same factory.  

- this is a type of a relationship in which there is a change with one variable, and corresponding with the change in the other. and because this corresponding change with the other variable in the same direction so it refers to a positive relationship. 

4- Quantitative:

as Quantitative is a measured observation, It's an information or data based

on quantities obtained. And using numbers, equipment and standard units.

5- Control :

as control is standard, reference data or experiment qualitatively. this is what

you compare your experimental results to. This is for comparing results, it

used as a standard for comparison and use baseline measurements to use in

the comparing.

6- Theory :

 as Theory is a presently accepted explanation of how something happened.

 Scientifically acceptable general principles to explain phenomena. It the

general or abstract principles of the science. for example the  wave theory of

light.

7- Law :

as a law is a statement that explains what something does under the same

conditions. when we take about law in science, it is a general rule to explain

the observations in the form of a mathematical statement. Scientific law may 

be stated in words or expressed as a mathematical equations.

8- Best fit curve:

as best fit curve is a curve drawn to average the data's deviations direct

relationship. It is a process of constructing a curve that has best fit to a

series of data points. 

7 0
3 years ago
Damage to which of the following would disrupt the process of photosynthesis?
Marta_Voda [28]
A, the chloroplast is where photosynthesis occurs

8 0
2 years ago
Other questions:
  • What role do individuals play in a capitalist system?
    15·2 answers
  • Is the process of bananas ripening a chemical change or a physical change? explain?
    14·1 answer
  • How to convert liters into milileters
    12·1 answer
  • Five different substances are given to you to be dissolved in water. which substances are most likely to undergo dissolution in
    11·2 answers
  • A rectangular prism of volume 84 cm3 has a mass of 760 g. What is the density of the rectangular prism?
    8·2 answers
  • What are the three states of matter?
    6·1 answer
  • The primary structure of a protein determines its secondary and tertiary structures. arrange these steps in the folding of a glo
    15·1 answer
  • Many large and small rocks are found under glaciers. Explain how these rocks are both weathered and eroded.
    8·2 answers
  • Is PDB ionic or Covalent?
    10·1 answer
  • Can you compare the function of veins in plants with anything else you know.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!