Answer:
evaporation?
Explanation:
evaporate the water leaving behind the sand?
A covalent bond occurs when two atoms share one pair of valence electrons
Brainliest answer please? :)
Answer:
Explanation:
The equation of the reaction is given as:
Given that:
[ATP] = 5.00 mM
[ADP] = 0.40 mM
[HPO₄²⁻] = 5.00 mM
converting mM to M; we have:
5.00 mM = 5.00 mM × 1 M/ 1000 mM
= 0.005 M
0.40 mM = 0.40 mM × 1 M/ 1000 mM
= 0.0004 M
The equilibrium constant is:
= 0.0004
Given that:
To Joule (J) ; we have
Temperature T = 37° C = (37+ 273)K = 310 K
is then calculated by using the equation:
Since is negative; the hydrolysis of ATP is spontaneous .
Answer:
The molar concentration of Cu²⁺ in the initial solution is 6.964x10⁻⁴ M.
Explanation:
The first step to solving this problem is calculating the number of moles of Cu(NO₃)₂ added to the solution:
n = 1.375x10⁻⁵ mol
The second step is relating the number of moles to the signal. We know the the n calculated before is equivalent to a signal increase of 19.9 units (45.1-25.2):
1.375x10⁻⁵ mol _________ 19.9 units
x _________ 25.2 units
x = 1.741x10⁻⁵mol
Finally, we can calculate the Cu²⁺ concentration :
C = 1.741x10⁻⁵mol / 0.025 L
C = 6.964x10⁻⁴ M