Write a scientific explanation that answers the following question: Is matter conserved during a

Chemistry

1 answer:

soldier1979 [14.2K]3 years ago

6 0

Claim is : chemical reactions are smaller

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How can one tell how much of each reactant will be used in a reaction?

Ostrovityanka [42]

To Tell how much of each reactant will be used in a reaction, we need to find which reactant is the Limiting Reagent.
All the reactants will be consumed in equal amount as that of L.R.

5 0

4 years ago

Chemistry balance equations C2H +O2=CO2+H2O

son4ous [18]

Invalid equation.

..............

7 0

2 years ago

How many molecules of ethanol (c2h5oh) (the alcohol in alcoholic beverages) are present in 155 ml of ethanol? the density of eth

ozzi

First convert volume to mass:

mass = 0.789 g/mL * 155 mL = 122.295 g

Then convert mass to number of moles:

number of moles = 122.295 g * (1 mole / 46 g) = 2.66 moles

Using avogadros number, we get the molecules:

<span>number of molecules = 2.66 moles * 6.022 x 10^23 molecules / mole = 1.6 x 10^24 molecules</span>

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3 years ago

53. Which of the following is NOT a correct interpretation of CH2O, the formula of the compound formaldehyde?

Free_Kalibri [48]

Answer:

B There are two grams of hydrogen for each gram of carbon in this compound.

Explanation:

The second option is a wrong interpretation of this chemical representation of formaldehyde.

Formaldehyde is an organic compound with the formula CH₂O.

As this is the simplest formula of the compound, it is the empirical formula. Also, the formula is the actual one for the compound and it is the molecular formula.

Chemically, the formula shows 1 mole of carbon, 2 moles of H and 1 mole of oxygen in the compound.

A mole of a substance is more a less a unit of measurement in chemistry and it is the amount of substance that contains the avogadro's number of particles.

This ratio is not the mass of chemical species in the compound. You cannot tell the mass of elements in a compound by merely looking at the formula.

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4 years ago

The type of bond between atoms in a molecule of CO2 (electronegativity difference = ~1)

maxonik [38]

Carbon dioxide, or $CO_{2}$ , is a pure covalent bond.

pure - it's non-polar, because it's a linear & symmetrical bond.

covalent - covalence is when 2 electrons are shared by a pair of atoms. in the case of carbon dioxide, it's three atoms with an oxygen atom on the right, an oxygen atom on the left, and a carbon atom smack in the middle. 2 of carbon's extra electrons are shared with the right oxygen, and 2 other extra atoms are shared with with left oxygen.

8 0

3 years ago