Answer:
1) A chemical reaction is shown.
SnO2 + H2 → Sn + H2O
What is true about this chemical reaction?
B.
It is unbalanced because the mass of the reactants (number of atoms) is greater than the mass of the products (number of atoms).
2) Read the information about an experiment.
Jadon plans on carrying out an experiment involving the burning of steel wool to illustrate the conservation of mass. Steel wool is made of iron. When it is burned it combines with oxygen to form iron(III) oxide.
Which step in his experiment is the most important if he wants his experiment to correctly demonstrate the conservation of mass?
A.
The steel wool should be burned inside of a sealed jar or other closed system.
Explanation:
The explanation to number 1 is that I selected it in my test and got it.
The explanation the number 2 is from the link below:
https://quizizz.com/admin/quiz/5dee60258f1145001bc02ed5/physical-science-2nd-9-weeks-practice-test-2020
Good coronary circulation nourishes the heart and reduces the risk of a heart attack. Coronary arteries supply blood to the myocardium and other components of the heart. They originate from the left side of the heart at the base of the aorta. The heart muscles needs oxygen-rich blood to be able to carry out its functions.
A stroke, also known as a cerebrovascular disease, is the necrosis of brain tissue because of ischemia led by variety of factors such as atherosclerosis or long standing hypertension. In this patient, the Wernike's area is most probably damaged as her language understanding is not intact. This is termed as receptive aphasia.
If Broca's area is damaged, then the patient will understand language but will not be able produce language. This is termed as expressive aphasia.
I am guessing that the molecule type will try to take over the cell OR it will excrete to much waste for the cell to handle and the cell will die.
I am just guessing, but I hope this helps
