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Yuki888 [10]
3 years ago
15

Forrest spills some acid on the lab floor. He notifies his teacher and begins to look for baking soda to neturalize the acid on

the floor. Who should be notified next ?
Chemistry
2 answers:
Romashka [77]3 years ago
8 0

Explanation:

Since, acid is spilled on the lab floor so, first of all the teacher must be notified about it. As teacher can better tell you what should be done in such a case.

At the same time, rest of the students present in the lab must be notified about it so that no one can accidentally step onto the acid otherwise it might cause a serious injury to anyone.

Thus, we can conclude that rest of the students or classmates should be notified next in the given situation.

gregori [183]3 years ago
7 0
His classmates should be notified next
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Which of the following changes can alter the form of a substance but does not necessarily change it to an other substance?
Goshia [24]

Answer:

  • The physical changes can alter the form of a substance but does not necessarily change it to an other substance

Explanation:

  • The physical properties of matter is one that does not depend on composition.It just change the form of matter into another form with changing into composition.
  • Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others.
  • The three states of matter are: solid, liquid, and gas. The melting point and boiling point are related to changes of the state of matter. All matter may exist in any of three physical states of matter.

Example:

  1. When water is boiled then it change into vapors. Now the form of water is change but its composition is same like water
  2. When water freezes into ice, now phase are different i.e water is liquid while ice is solid but both have same composition.
8 0
3 years ago
The point at where the water is changing phase
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Answer:

the point at there the water is changing is titled "getting dressed"

6 0
3 years ago
Atoms of arsenic (As) are often added to silicon (Si) in a process called doping to change the conductivity of the silicon. How
IRINA_888 [86]

Answer:

d) An atom of arsenic has one more valence electron and more electron shells than an atom of silicon, so the conductivity increases because the arsenic atom loses the electron.

Explanation:

This is an example of a n-type semiconductor. The additional electron introduced to the 'grid' of silicon atoms causes an increase in the conductivity of the silicon. This additional electron is introduced as arsenic loses its extra electron.

5 0
3 years ago
Read 2 more answers
In a closed system containing three different gases as shown, X2 + Y2 = 2XY
Luden [163]
X2+Y2-2XY=(X-Y)2=0
X=Y
5 0
3 years ago
Select the correct hybridization for the central atom based on the electron geometry cocl2 (carbon is the central atom).
Rainbow [258]
In this compound (Phosgene) the central atom (carbon is Sp² Hybridized).

Sp, Sp² and Sp³ can be calculated very simply by doing three steps, 

Step 1:
           Assume triple bond and double bond as one bond and assign s or p to it. In this example carbon double bond oxygen is considered once and let suppose it is s. Now we are having our s.

Step 2:
          Count lone pair of electron, each lone pair counts for s and p. In this case there is no lone pair of electron on carbon, so not included.

Step 3:
          Count single bonds for s and p. As we have already assigned s to the double bond, now one p for one single bond, and other p for the other single bond.

Result:
          So, we counted 1 s for double bond, 1 p for one single and other p for second single bond. As a whole we got,

                                                       Sp²

Practice:
You can practice for hybridization of Oxygen in this molecule. Oxygen has 2 lone pair of electrons. (Hint: Sp² Hybridization)
7 0
3 years ago
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