Answer:
25 grams (25g) of sugar
Explanation:
We can set this up algebraically:
10g = 2L
÷ 2 ÷ 2
5g = L
meaning that 5 g are needed to make 1 L
So, if we have 5 L, we will need (5 × 5) 25 grams to produce the same concentration.
Fe: 2+
Br: 1-
Checked on the periodic table
Answer:
1.02mol
Explanation:
Using the general gas equation below;
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question,
P = 2.0 atm
V = 11.4L
T = 273K
n = ?
Using PV = nRT
n = PV/RT
n = 2 × 11.4/ 0.0821 × 273
n = 22.8/22.41
n = 1.017
n = 1.02mol
