Answer:
True
Explanation:
A pH of 7 is greater than basic but lesser than acidic. Therefore, it's neutral
Answer:
Most igneous, metamorphic, and sedimentary rocks contain rubidium (Rb) and strontium (Sr) in detectable amounts. However, the concentrations of these elements are almost always less than 1 percent, and they are therefore rarely determined in routine chemical analyses. Neither rubidium nor strontium is a major constituent in the common rock-forming silicate minerals, although strontium does form a carbonate (strontianite) and a sulfate (celestite) which are found in some hydrothermal deposits and certain sedimentary rocks, particularly carbonates.
Explanation:
Answer:
T = 42.08 °C
Explanation:
Using the expression,

Wherem


is the activation energy
R is Gas constant having value = 8.314 J / K mol
Thus, given that,
= 45.6 kJ/mol = 45600 J/mol (As 1 kJ = 1000 J)

The conversion of T( °C) to T(K) is shown below:
T(K) = T( °C) + 273.15
So,
T = (30 + 273.15) K = 303.15 K
So,







Conversion to °C as:
T(K) = T( °C) + 273.15
So,
315.23 = T( °C) + 273.15
<u>T = 42.08 °C</u>
Incomplete combustion<span> occurs when the supply of air or oxygen is poor. Water is still </span>produced<span>, but </span>carbon<span> monoxide and </span>carbon<span> are </span>produced<span> instead of </span>carbon dioxide<span>. The </span>carbon<span> is released as soot. </span>Carbon<span> monoxide is a poisonous gas, which is one reason why </span>complete combustion<span> is preferred to </span>incomplete combustion<span>.</span>
The circulatory system and the respiratory system; The respiratory system takes in the oxygen which then goes into our bloodstream to help our cells convert it into ATP energy.