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3 years ago

4. How many minutes are there in 1.000 week? please help

Chemistry

2 answers:

ANTONII [103]3 years ago

8 0

There are 10,080 minutes in 1 week 1.1M minutes in 1,000 weeks

ioda3 years ago

5 0

There are 10,080 minutes

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Can someone help me with this?

amm1812

Answer:

dnaq tester

Explanation:

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4 years ago

What is the formula for the compound dinitrogen pentoxide? n4o5 n5o4 n4o6 n5o2 n2o5?

STALIN [3.7K]

N2, penta means 5, so 5 oxygens

so with that being said n205

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3 years ago

Read 2 more answers

ASAP: in group 13, the only metalloid, boron, is at the very top of the group. Explain why the rest of the group has metallic be

Marrrta [24]

Electronegativity of boron is the highest in the group and it will form covalent bonds in all his combinations.

The rest of the group will form bonds with intermediate nature between covalent and ions bods in their respective compounds, with thallium (Tl) behaving most close to a metal.

Moreover boron have a very high melting points (around 2200 °C) while in the boron cristal the chemical bonds are directed in space, similar with carbon suggesting his nature as a non-metal.

Other elements form the group Al, Ga, In, Tl have lower melting points 660, 30, 157 and 304 °C, respectively. Also in the elemental state, they have metallic characteristics: metalic luster, ductility, high electrical and thermal conductivity.

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3 years ago

If 0.089 grams of KI is dissolved in 500g of H2O, what is the concentration of the resulting solution in parts per million?

frez [133]

Answer:

The concentration of the resulting solution in parts per million is 177.97

Explanation:

Parts per million (ppm), is a unit of measure for concentration that refers to the number of units of the substance per million units of the set.

The concentration in parts per million expressed in mass / mass is calculated by dividing the mass of the solute (ms) by the mass of the solution (md, sum of the mass of the solute and the mass of the solvent), both expressed in the same unit and multiplied by 10⁶ (1 million).

$ppm=\frac{ms}{md} *10^{6}$

So, being:

ms: 0.089 grams of KI

md: 0.089 grams of KI + 500 grams of H₂O= 500.089 grams

Replacing:

$ppm=\frac{0.089 grams}{500.089 grams}*10^{6}$

ppm= 177.97

The concentration of the resulting solution in parts per million is 177.97

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3 years ago

Is “ the silver spoons tarnished and turned black” physical or chemical property?

FrozenT [24]

it is a Chemical property

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3 years ago