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3 years ago

What is a concussion, and how is it related to force?

Chemistry

1 answer:

vivado [14]3 years ago

6 0

Answer:

A head injury expert says that most concussions deliver 95 g's to the human body upon impact. G-force is a unit of force equal to the force exerted by gravity. In addition, the average football player receives 103 g's when hit during a game.

Explanation:

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zalisa [80]

D volume
the water evaporated so there is less water

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3 years ago

Read 2 more answers

What did theodor schwann do??? for the cell theory (what is the theory)

Mice21 [21]

He concluded that all tissues are made up of cells.

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4 years ago

Please help! :)

Reika [66]

Answer:

There will be 525.2 grams of K3N produced

Explanation:

Step 1: Data given

Number of moles of potassium oxide ( K2O) = 6 moles

Magnesium nitride (Mg3N) = in excess

Molar mass of K3N = 131.3 g/mol

Step 2: The balanced equation

Mg3N2 + 3K2O → 3MgO + 2K3N

Step 3: Calculate moles of K3N

The limiting reactant is K2O.

For 1 mol Mg3N2 consumed, we need 3 moles of K2O to produce 3 moles of MgO and 2 moles of K3N

For 6 moles K2O we'll have 2/3 * 6 = 4 moles of K3N

Step 4: Calculate mass of K3N

Mass of K3N = moles K3N * molar mass K3N

Mass of K3N = 4 moles * 131.3 g/mol

Mass of K3N = 525.2 grams

There will be 525.2 grams of K3N produced

8 0

3 years ago

Where are most of the metals found on the periodic table

sergeinik [125]

Answer:

Left

Explanation:

Metals are located on the left of the periodic table, and nonmetals are located on the upper right. They are separated by a diagonal band of semimetals.

3 0

3 years ago

Explain how we know that charge is conserved in this<br> reaction: Li+ CI → Lici

butalik [34]

Answer:

Charge is conserved due to the groups in which Lithium and Chlorine are located in the periodic table of the elements.

Explanation:

In the reaction $Li + Cl - > LiCl$ , we can examine the groups in which Li and Cl are found in the periodic table of the elements. Lithium appears in Group 1A, or the alkali metals group, indicating that it carries a charge of +1. Chlorine appears in Group 7A, or the halogen group, indicating that it carries a charge of -1. Because LiCl's constituent elements carry the same charges as previously mentioned, LiCl will have an overall charge of 0.

The chemical equation can then be rewritten as $Li^{+} + Cl^{-} - > LiCl$ , which, if looking at the individual charges of Li and Cl in lithium chloride, becomes $Li^{+} + Cl^{-} - > Li^{+}Cl^{-}$ . Adding the charges on the reactant and product sides of this chemical equation gives us zero in both locations, meaning that we have a charge of 0 on the reactant side and a charge of 0 on the product side. This indicates that charge is conserved in this reaction.

Another way to look at this is expressed in the valence electrons of Li and Cl. Li has an electron configuration of $1s^{2}2s^{1}$ , where the n = 2 electron shell has one of eight total electrons needed to fill the valence shell. This means that Li will easily lose one electron in order to have an electron configuration where the n = 1 electron shell is full, $1s^{2}$ , and become the $Li^{+}$ ion. Similarly, Cl has an electron configuration of $1s^{2}2s^{2}2p^{6}3s^{2}3p^{5}$ (or $[Ne]3s^{2}3p^{5}$ ), meaning that the n = 3 electron shell is one electron away from becoming complete. Cl will easily gain one electron to have the electron configuration $[Ne]3s^{2}3p^{6}$ (or $[Ar]$ ) in order to have an electron configuration where the n = 3 electron shell is full, $3s^{2}3p^{6}$ , and become the $Cl^{-}$ ion. Thus, when Li and Cl bond, Li will lose the electron $[1, 0, 0, +\frac{1}{2}]$ and transfer it to Cl, where it will become the electron $[3, 1, 1, -\frac{1}{2}]$ , thus conserving charge, as there is an equal total number of electrons before and after the reaction.

3 0

2 years ago