Answer:
751.8kg/m3
Explanation:
Assuming water's density is 1,000 kg/m3 and acetone's density is 791kg/m3
we use the formula
where 1/p is the density of the mixture, xi is the mass fraction and pi is the individual density of the components of the mixture.
To calculate xi we consider that acetone and water are in a 50% proportion, this means xi is 0.5 for both substances, now we can substitute in the formula:
now we obtain p.
<em>p=751.8kg/m3</em>
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Answer:
The Sun rotates around the Earth as it revolves to cause day and night. The Sun revolves around the Earth as it rotates to cause day and night.
Explanation:
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<u>Given:</u>
Volume of HCl (VHCl) = 25,0 ml = 0.025 L
Volume of NaOH (VNaOH) = 22.15 ml = 0.02215 L
Molarity of NaOH (MNaOH) = 0.155 M
<u>To determine:</u>
Molarity of HCl
<u>Explanation:</u>
Titration reaction-
HCl + NaOH → NaCl + H2O
Based on the reaction stoichiometry:
1 mole NaOH requires 1 mole HCl
# moles of NaOH = VNaOH * MNaOH = 0.02215*0.155 = 0.003433 moles
# moles of HCl = # moles of NaOH = 0.003433 moles
Molarity of NaOH = 0.003433/0.025 = 0.137 M
Decomp. ~ 2H2O —-> 2H2 + O2
Single Disp. ~ AgNO3 + Cu —> CuNO3 + Ag
Double Disp ~ Pb(NO3)2(aq) + 2KI(aq) -> 2KNO3(aq) + PbI2(s)
Combustion ~ CH4 + O2 —> CO2 + 2H2O
Synthesis ~ 2Mg + O2 —> 2MgO
You can apply Charles' Law.
V1= 5.00 (L)
T1= 92.3 + 273 = 365.3 (K)
T2= -37 + 273 = 236 (K)
V2 = ? (L)
We have: V1/T1 = V2/T2
--> V2= (V1*T2)/T1 = (5*236)/365.3 = 3.23 (L)