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3 years ago

Define: Trapping, Heading, Dribbling, and Throwing in I’ll give brainless

Chemistry

1 answer:

Vladimir79 [104]3 years ago

7 0

Answer:

Trapping-bring (the ball) under control with the feet or other part of the body on receiving it.

Heading-shoot or pass (the ball) with the head.

Dribbling-take (the ball) forward past opponents with slight touches of the feet

This is if your talking about soccer

Explanation:

Throwing-propel (something) with force through the air by a movement of the arm and hand.

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If a car travels 60 miles in 3 hours, what is the car’s speed?

marysya [2.9K]

Answer = 20 mph !
Hope this helps

6 0

4 years ago

Read 2 more answers

For the following give (1) oxidation # of metal, (2) number of d electrons, draw valence bond description of the complex, fill i

andrezito [222]

Answer:

1) the oxidation state of the metal is +2

2) there are four d electrons

3) metal valence electrons =4 ligand valence electrons= 18

4) sp^3d^2

5) octahedral geometry

Explanation:

[Cr(H2O)6]2+ is an octahedral complex. Octahedral complexes are known to have the metal ion in sp^3d^2 hybridization state. Since there are six ligands each bonding to the central metal ion, there are eighteen ligand valence electrons and four valence electrons from the metal present in the high spin complex.

The crystal field of high spin and low spin octahedral for a d4 ion is shown in the image attached.

4 0

3 years ago

Choose the nonmetallic elements from the list. Check all that apply.

prohojiy [21]

The answer is:

Oxygen

Carbon

argon

boron (metalloid)

The explanation:

-metal : any of various opaque, fusible, ductile, and typically lustrous substances that are good conductors of electricity and heat, form cations by loss of electrons, and yield basic oxides and hydroxides; especially: one that is a chemical element as distinguished from an alloy

-nonmetal : a chemical element (as Oxygen, carbon, or nitrogen) that lacks the characteristics of a metal and that is able to form anions, acidic oxides, acids, and stable compounds with hydrogen

‬‏

-Non-metals are the elements in groups 14-16 of the periodic table. ... The non-metals exist in two of the three states of matter at room temperature: gases (such as oxygen) and solids (such as carbon). The non-metals have no metallic luster and do not reflect light. They have oxidation numbers of ±4, -3, and -2

1-Gallium is a chemical element with symbol Ga and atomic number 31. It is in group 13 of the periodic table, and thus has similarities to the other metals of the group, aluminium, indium, and thallium. ... Since its discovery in 1875, gallium has been used to make alloys

2-Yttrium is a chemical element with symbol Y and atomic number 39. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element"

3-Argon is a nonmetal. It is a noble gas, located in group 18 (far right column on the periodic table). ... Elements to the left of this line are metals, while elements to the right of this line are nonmetals

4-Polonium has a position in the periodic table that could make it a metal, a metalloid or a nonmetal. It is classed as a metal as its electrical conductivity decreases as its temperature rises

5-Boron is classified as a metalloid, it has properties of both metals and nonmetals. ... I'd say Boron is a non metallic element and the only non-metal of the group 13 of the periodic table the elements. Boron is electron-deficient, possessing a vacant p-orbital.

6-Carbon is a solid non-metal element. Pure carbon can exist in two very different forms - diamond and graphite. The table shows some differences between them. Diamond is the hardest natural substance on Earth, but it is also very brittle and will shatter if hit with a hammer.

7- Oxygen is non-metals, It is one of the elements in groups 14-16 of the periodic table. ... It exists in two of the three states of matter at room temperature.

5 0

3 years ago

Read 2 more answers

Which of the following groups MAY have no detectable IR absorption in the range usually associated with an absorption?

Svetlanka [38]

Here we have to get the functional group which may not be detected in IR spectrum.

The ketene and alkyne group may not be detectable by IR absorption.

The infrared (IR) spectrum is an important record which gives sufficient information about the structure of a compound. The absorption of infrared radiation causes the various bands in a molecule to stretch and bend with respect to one another. The most important region for an organic chemist is 4000 cm⁻¹ to 667 cm⁻¹. The region is called the IR region.

The IR spectra is an important tool to recognize the presence of a particular group in an organic group.

The IR region of the given functional group are shown as:

1. Alkyne -C≡C- 2100 cm⁻¹ to 2260 cm⁻¹

2. Ketene -C=C=O- 2100 cm⁻¹ to 2150 cm⁻¹

3. Aldehyde carbonyl -CH=O 1700 cm⁻¹ to 1725 cm⁻¹

4. nitrile -C≡N 2200 cm⁻¹ to 2250 cm⁻¹

5. Ether -C-O- 1000 cm⁻¹ to 1300 cm⁻¹.

Among the function groups the -C≡C- bond is hard to detect by IR spectrum. It is not found in symmetrical alkyne.

The ketene group also not clearly indicative in the IR region.

5 0

3 years ago

Directions: Write the balanced equation for each of the following situations. SHOW ALL OF YOUR WORK ON ATTACHED PAGES, OR IT WIL

AveGali [126]

Balanced chemical equation of potassium chlorate heated to form potassium chloride and oxygen:

$2KClO_{3(s)}+\text{heat}\rightarrow2KCl_{(s)}+3O_{2(g)}$

Reaction type: Decomposition reaction.

Now we will use the stoichiometry to calculate the masses of reactants and products after reaction completion.

We are given that the mass of KClO3 = 5.00x10^15 ng = 5000000 g

We will first calculate the number of moles of KClO3 and use the stoichiometry to calculate other masses.

number of moles (n) of KClO3:

n = m/M where m is the mass in grams and M is the molar mass in g/mol

n = (5000000 g)/(122,55g/mol)

n = 40799.67 mol of KClO3

Mass of KCl:

To find the number of moles of KCl, we will use the molar ratio between KClO3:KCl which is 2:2 according to the equation. Therefore number of moles of KCl = 40799.67 mol

m = nM

m = (40799.67 mol) x (74,5513 g/mol)

m = 3041668.707 g

Mass of Oxygen:

We will use the molar ratio between KClO3:O2 which is 2:3, therefore the number of moles of O2 = 40799.67 x (3/2) = 61199.505 mol

m = nM

m = (61199.505 mol) x (15.999 x 2)

m = 1958261.761 g

There should be NO mass of KClO3 after the reaction.

However, initially we had a mass of 5000000 g of KClO3 before the reaction. After the reaction a mass of 3041668.707 g KCl and 1958261.761 g O2 was produced whuch in total is = 4999930.468 g

The mass of KClO3 left = 5000000 g - 4999930.468 g = 69.532 g

7 0

1 year ago