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2 years ago

7

The products of a chemical reaction have different properties than the reactants.

1 answer:

Marta_Voda [28]2 years ago

5 0

Answer:

Explanation:

The products of a chemical reaction have different properties than the reactant because they underwent a chemical change by definition of a chemical reaction. The products are new combinations atoms forming different molecules.

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Which type of bonding forms due to electrical attractions between oppositely charged elements

deff fn [24]

Answer:

Explanation:

Ionic bond

Ionic bond, also called electrovalent bond, type of linkage formed from the electrostatic attraction between oppositely charged ions in a chemical compound.

5 0

3 years ago

Be sure to answer all parts. The percent by mass of bicarbonate (HCO3−) in a certain Alka-Seltzer product is 32.5 percent. Calcu

pochemuha

Answer : The volume of $CO_2$ will be, 514.11 ml

Explanation :

The balanced chemical reaction will be,

$HCO_3^-+HCl\rightarrow Cl^-+H_2O+CO_2$

First we have to calculate the mass of $HCO_3^-$ in tablet.

$\text{Mass of }HCO_3^-\text{ in tablet}=32.5\% \times 3.79g=\frac{32.5}{100}\times 3.79g=1.23175g$

Now we have to calculate the moles of $HCO_3^-$ .

Molar mass of $HCO_3^-$ = 1 + 12 + 3(16) = 61 g/mole

$\text{Moles of }HCO_3^-=\frac{\text{Mass of }HCO_3^-}{\text{Molar mass of }HCO_3^-}=\frac{1.23175g}{61g/mole}=0.0202moles$

Now we have to calculate the moles of $CO_2$ .

From the balanced chemical reaction, we conclude that

As, 1 mole of $HCO_3^-$ react to give 1 mole of $CO_2$

So, 0.0202 mole of $HCO_3^-$ react to give 0.0202 mole of $CO_2$

The moles of $CO_2$ = 0.0202 mole

Now we have to calculate the volume of $CO_2$ by using ideal gas equation.

$PV=nRT$

where,

P = pressure of gas = 1.00 atm

V = volume of gas = ?

T = temperature of gas = $37^oC=273+37=310K$

n = number of moles of gas = 0.0202 mole

R = gas constant = 0.0821 L.atm/mole.K

Now put all the given values in the ideal gas equation, we get :

$(1.00atm)\times V=0.0202 mole\times (0.0821L.atm/mole.K)\times (310K)$

$V=0.51411L=514.11ml$

Therefore, the volume of $CO_2$ will be, 514.11 ml

6 0

3 years ago

I need help on the question about chemistry

lapo4ka [179]

Answer:

14.125

Explanation:

If my calculations are right.

there are 44.0 moles in co2
+20.0
which equals 64
there are 78.125 moles in O2 so just subtract it by 64 which gives you
14.125

MOLE CALCULATION

divide the mass of the material by its molar mass. The molar mass of a substance is the mass in grams of one mole of that substance.

8 0

3 years ago

True or False .. As one moves from tissues to organs, the levels become less complex.

Georgia [21]

I think it’s true I am not sure

5 0

3 years ago

Read 2 more answers

PLEASE HELP I DONT HAVE MUCH TIME!!

Dovator [93]

Answer:

Rb + H2O -> RbOH + H2

Explanation:

DDR

3 0

3 years ago