Answer:
0.8°C
Explanation:
Given the following:
Trial 1 : freezing point of distilled water = 0.9°C
Trial 2: freezing point of distilled water = 0.7°C
The average freezing point of distilled water is the sum of the two freezing points obtained divided by 2 ;
(Trial 1 + trial 2) / 2
(0.9°C + 0.7°C) / 2
1.6°C / 2
= 0.8°C
Answer:
B) The tree-of-heaven is originally from China. It produces a chemical that prevents other plants from growing around it.
Explanation:
In ecology, a plant is said to be "INVASIVE" if it is FOREIGN or NON-NON-NATIVE to a particular region or area and also poses a great threat to the native species of that region. An invasive species, when introduced into a foreign habitat, heavily competes with the existing local species of that same habitat.
This is the case of the tree-of-heaven, which is originally from China. The tree produces a chemical that prevents other plants from growing around it. Note that this plant species is foreign to the Shenandoah National Park in Virginia as it originates from China. Likewise it harms the local or native species of the park by secreting a chemical that prevents other plants from growing around it. This characteristics portrays a plant that is INVASIVE.
Answer:
Molar mass of NaC2HO4 is 112.0167 g/mol
Explanation:
TRUE....Bunsen burners can overheat and burn the surface it was on, or if a cup or pot is on top it will burn through it and cause smoke and fire...