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4 years ago

Is Water Wet? Brainliest Awarded

Chemistry

2 answers:

nika2105 [10]4 years ago

8 0

XD We all know water is wet. But once water turns into a gas, it can either be wet or dry or both LOL

krok68 [10]4 years ago

6 0

Whatever water touches is wet and yes waters wet its same as asking if fire is hot. its a dumb question. but yes and no water can be wet but it can be gasses or solids not always liquid.

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WHICH SIGN CAN SAY THAT A PHYSICAL CHANGE HAS TAKEN PLACE

Pie

Answer:

4. all of the above

Explanation:

that my answer hehehe..

7 0

3 years ago

Dolomite is a carbonate of magnesium and calcium. Analysis shows that 7.81 g of dolomite contains 1.70 grams of Ca. Fluorite is

andrew11 [14]

Answer:

The richer source of calcium is fluorite.

Explanation:

Percentage of element in compound :

$=\frac{\text{mass of element}}{\text{Mass of compound}}\times 100$

1. Dolomite is a carbonate of magnesium and calcium:

Given mass of dolomite = 7.81 g

Mass of calcium present in given mass of dolomite = 1.70 g

Percentage of calcium in Dolomite:

$=\frac{1.70 g}{7.81 g}\times 100=21.77\%$

2. Fluorite is a mineral of calcium and fluorine:

Given mass of fluorite = 2.76 g

Mass of fluorine present in given mass of fluorite = 1.34 g

Percentage of fluorine in fluorite :

$=\frac{1.34 g}{2.76 g}\times 100=48.55\%$

Percentage of calcium in fluorite = 100% - 48.55 % = 51.45%

Percentage of calcium in fluorite > Percentage of calcium in Dolomite

51.455 > 21.77%

So, the richer source of calcium is fluorite.

7 0

3 years ago

a compound containing only carbon and hydrogen produces 1.80 gCO2 and 0.738 gH2O. Find the empirical formula of the compound. Ex

r-ruslan [8.4K]

Answer:

The empirical formula is CH2

Explanation:

Step 1: Data given

Mass of CO2 produced = 1.80 grams

Mass of H2O produced = 0.738 grams

Step 2: The balanced equation

CxHy + O2 → CO2 + H2O

Step 3: Calculate moles CO2

Moles CO2 = mass CO2 / molar mass CO2

Moles CO2 = 1.80 grams / 44.01 g/mol

Moles CO2 = 0.0409 moles

Step 4: Calculate moles C

In 1 mol CO2 we have 1 mol CO2

In 0.0409 moles CO2 we have 0.0409 mol C

Step 5: Calculate moles H2O

Moles H2O = mass H2O / molar mass H2O

Moles H2O = 0.738 grams / 18.02 g/mol

Moles H2O = 0.04095 moles

Step 6: Calculate moles H

In 1 mol H2O we have 2 moles H

In 0.04095 moles H2O we have 2*0.04095 = 0.0819 moles H

Step 7: Calculate the mol ratio

We divide by the smallest amount of moles

C: 0.0409 / 0.0409 = 1

H: 0.0819 moles / 0.0409 = 2

The empirical formula is CH2

4 0

3 years ago

Which reaction should be used to convert propene into alkyl halide

Firdavs [7]

Alkyl is a rare compound, and also very confusing.
I'm assuming you meant "propane"...

C3H8 = Propane
CnH2n+1-- X << Alkyl Halide
X = Cl

Simply set a chemical reaction :


C3H8 → CnH2n+1-- X

5 0

3 years ago

Imagine that a new planet was discovered in our solar system. Answer the following questions based on the patterns discovered by

Elena-2011 [213]

Answer:

counter clockwise

Explanation:

Dont all planets in our solar system rotate counterclockwise?

6 0

3 years ago