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expeople1 [14]
4 years ago
7

What are the first five elementsof the periodic table?

Chemistry
1 answer:
Kamila [148]4 years ago
3 0
Hydrogen
Helium
Lithium
Beryllium
Boron
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Why would heating up the human body be a bad choice for causing a chemical reaction?
Furkat [3]

Answer:

Explained below

Explanation:

The human body has a normal core temperature of around 37°C to 38°C.

Now, if it is heated up to say 39° to 40°C, fatigue will start to set in and the brain begins to tell the muscles to slow down.

If it's now heated to higher temperatures above above 41°C, the body will begin to experience heat exhaustion and therefore will start to shut down.

Due to this process, the body can't even sweat at that stage because blood flow to the skin will stops thereby making the body feel cold and clammy. Thus, chemical processes/reaction in the body will begin to be affected and the cells inside the body will start to deteriorate and thus there is now a huge risk of having multiple organ failure.

5 0
3 years ago
Use the reaction 2NO 2 (g) = N 2 O 4 (g) to answer the following question:
anyanavicka [17]

Answer:

According to Le Chatelier’s Principle, a stress placed on a system at equilibrium will cause the equilibrium to shift to counteract the stress.  For example, a temperature increase in the above reaction will favor the reverse reaction to use the excess heat and form brown NO2 gas.  A temperature decrease in the above reaction favors the forward reaction to produce heat and form colorless N2O4 gas.

3 0
3 years ago
Read 2 more answers
What's the ionic compound formula for zinc bicarbonate
raketka [301]
Zn(HCO3)2 is the compound for Zinc Bicarbonate
6 0
3 years ago
Read 2 more answers
In H2SO4, the oxidation number of H is , that of S is , and that of O is .
adell [148]

Answer:

Explanation:

A) In H2SO4, the oxidation number of H is , that of S is , and that of O is .

In H₂SO₄ the oxidation sate of H is +1 (H₂= +2) that of sulfur is +6 and O is -2 (O₄= -8)

In SO₄ the oxidation state is -2, because negative and positive charges are not equal. That's why two hydrogen atoms are attached with one SO₄ to balance the charge.

B) In CaSO4, the oxidation number of Ca is , that of S is . , and that of O is .

In CaSO₄ the oxidation sate of Ca is +2 that of sulfur is +6 and O is -2 (O₄= -8)

In SO₄ the oxidation state is -2, because negative and positive charges are not equal. That's why one calcium atoms is attached with one SO₄ to balance the charge.

C) In HF, the oxidation number of H is , and that of F is .

In HF the oxidation state of hydrogen is +1 and that of fluorine is -1. Both form ionic compound.

4 0
3 years ago
If a 2,000-kilogram car accelerates at a rate of 3 meters
Nostrana [21]

Explanation:

Newton's second law of motion states that the acceleration of an object is dependant on the amount of force applied and the mass of the object itself, which is illustrated by the equation

                                                       F \ = \ ma,

where F is the force applied, m is the mass of the object and a is the acceleration.

Therefore,

                                                    F \ = \ (2000 \ \text{kg})(3 \ \text{m\,s}^{-2}) \\ \\ F \ = \ 6000 \ \text{N}

Hence, 6000 N of force is applied by the engine to the car.

5 0
3 years ago
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