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
konstantin123 [22]
3 years ago
8

A physical change _____ change the composition or identity of the substance. will will not 2. An example of a physical change is

crushing a rock a shirt fading in the sun 3. The most common occurrences of physical changes are changes in the phase of matter. changes that occur in nature.
Chemistry
1 answer:
Sav [38]3 years ago
6 0

Answer:

not sure

Explanation:

a physical change (can)change.,....

You might be interested in
How does the appearance of a substance change when it<br> changes phase?
kicyunya [14]

Answer:

Melting: the substance changes back from the solid to the liquid. Condensation: the substance changes from a gas to a liquid. Vaporization: the substance changes from a liquid to a gas. Sublimation: the substance changes directly from a solid to a gas without going through the liquid phase.

Explanation:

6 0
3 years ago
why is the concentration of helium increased in some gas mixtures that divers breath in order to reduce the partial pressure of
sdas [7]

Answer:

Because of oxygen toxicity.

Explanation:

Oxygen toxicity.

Oxygen has been known to cause central nervous system (CNS) toxicity when the pressure gets higher. This toxicity can cause convulsions, and this can cause the diver to drown.

The current standard maximum safe oxygen working pressure is 1.4 atm ppO2. This is equal to 56.5m/185′ when breathing air (21% O2 / 79% N). Below that depth the fraction of oxygen in a breathing gas must be reduced, and in order to maintain this maximum pressure of 1.4 ppO2, Helium must be added.

8 0
3 years ago
In the nuclear transmutation, 168O (?, α)137N, what is the bombarding particle? In the nuclear transmutation, O (?, )N, what is
xeze [42]

Answer:

The bombarding particle is a Proton

Explanation:

A Nuclear transmutation reaction occurs when radioactive element decay, usually converting them from one element/isotope into another element. Transmutation is the process which causes decay, generally, alpha or beta.

¹⁶₈O(P,alpha) ¹³₇N, can be written as

¹⁶₈O + x goes to ¹³₇N + ⁴₂He

Where x can be anything, balancing the equation in order to give us the correct amount of proton number and nucleus number

16 + x = 13 + 4

x = 17 – 16 = 1, Hence we can say that x = ¹₁P

<u>¹⁶₈O + ¹₁P goes to ¹³₇N + ⁴₂He</u>

Here we can clearly see the bombarding particle is ¹₁P (proton). The ejected particle being ⁴₂He which is also known as an alpha particle

5 0
3 years ago
Jamie rolls a 6-sided die 30 times and determines that the experimental probability of rolling a 2 is Start Fraction 1 over 15 E
anyanavicka [17]

Answer:

Conduct more trials

Explanation:

Theoretical Probability can be defined as what someone is expecting to happen

Experimental Probability on the other hand, is defined as what actually happens.

Probability is usually calculated in the same way for experimental probability and that of theoretical probability. You divide the total number of possible ways in which a particular outcome can happen, by the total number of outcomes itself.

In Experimental probability, the more times a probability is tried, it gets closer and even more closer to theoretical probability.

So, for the question, Jamie should improve the number of tries more, so as to get his experimental probability results to be closer to the theoretical probability result.

8 0
3 years ago
Hydrochloric acid + aluminum hydroxide ®
makkiz [27]
The answer is C. and D. water and aluminum
3 0
3 years ago
Other questions:
  • Which list of radioisotopes contains an alpha emitter, a beta emitter, and a positron emitter?
    15·2 answers
  • Hrjrhrhrvtchtjntokrjt​
    15·1 answer
  • Whats the ratio of KMnO4:KCl =
    9·1 answer
  • What do the rows on the periodic table represent
    11·1 answer
  • Is a charge indicated on neutral atoms
    12·1 answer
  • Which tool gives scientists information about the wind speed and humidity of a region?
    15·1 answer
  • What volume will 2.04g of helium gas occupy at 100C and 1.13 atm?
    9·1 answer
  • How many electrons are in an atom with the electron<br> configuration of 1s 2s 2p 3s!?
    15·1 answer
  • Explain the difference between endothermic and exothermic processes. Provide an example of each.
    9·1 answer
  • Which element can form an oxide with the general formula m2o or mo where m is a metal
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!