B: a liquid becomes a gas Let me know if it’s right or wrong
Answer:
I predict the reaction between __Fe___ and __CuSO___ will yield a _____single replacement_____ reaction/s.
I predict the reaction between ___ Pb(NO3)2__ and __ Kl___ will yield a _____ double replacement_____ reaction/s.
I predict the reaction between ___Mg__ and __HCI___ will yield a ____Single replacement______ reaction/s.
I predict the reaction between __ electrolysis___ and _____ will yield a ____ decomposition______ reaction/s.
I predict the reaction between __ Mg___ and __ O2___ will yield a ____ synthesis and inorganic combustion______ reaction/s.
Explanation:
Answer:
2 Pb(OH)2 + 2H2SO4 => 2 PbSO4 + 4 H20
Explanation:
Since there's no "?" shown in the equation, let's balance it and solve it entirely.
Pb(OH)2 + 2H2SO4 => PbSO4 + 2H20
1Pb + 10O + 6H + 2S ≠ 1Pb + 6O + 4H + 1S → it needs to be balanced.
To do this, let's start by looking at the elements that are only presnet once on each side:
On the products half, S is only present in PbSO4 → if we look at the reagents half, we can see it needs a "2" → then Pb is multiplied by 2 too → so Pb(OH)2 on the reagents half will also need a "2" → final count on O and H on the reagents side: 12O and 8H → to balance it, you need 4 water molecules on the products side.
Answer:
Explanation:
we know that specific heat is the amount of heat required to raise the temperature of substance by one degree mathmeticaly
Q=mcΔT
ΔT=T2-T1
ΔT=26.8-10.2=16.6
C for water is 4.184
therefore
Q=1.00*4.184*16.6
Q=69.4 j
now we have to covert joule into calorie
1 calorie =4.2 j
x calorie=69.4 j/2
so 69.4 j =34.7 calorie thats why 34.7 calorie heat is required to raise the temperature of water from 10.2 to 26.8 degree celsius
