Explanation:
a microscope with high magnification and resolution, employing electron beams in place of light and using electron lenses.
Answer:
Al₂O₃ + 6HNO₃ → 2Al(NO₃)₃ + 3H₂O
Explanation:
left side of arrow right side of arrow
Al 2 1
O 3 1
H 1 2
NO₃ 1 3
Al₂O₃ + 6HNO₃ → 2Al(NO₃)₃ + 3H₂O
now there are,
left side of arrow right side of arrow
Al 2 2
O 3 3
H 6 6
NO₃ 6 6
you have to try and multiply different numbers and stop when you have equal molecule on both sides of the arrow.
Answer:
The correct option is : b. can be mild, moderate, or severe
Explanation:
Myocardial infarction, or heart attack, is a medical condition that occurs when the flow of blood stops or decreases to the human heart, thus causing damage to the heart muscles. Some of the symptoms include chest pain, nausea, sweating, cold sweat, fatigue, etc.
Heart attacks<u> can be mild, moderate or severe and can also cause sudden death. </u>
If the inadequate blood flow to the heart lasts long enough, it can lead to <u>necrosis of the heart tissues</u>.
Myocardial infarction can be <u>diagnosed by electrocardiogram (ECG), echocardiogram, blood tests, X-ray, angiogram, MRI.</u>
Answer:
C) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere.
Explanation:
Electromagnetic waves do not require a medium to travel. they can travel through vacuum also. for example:- light wave is an electromagnetic wave and it can travel through vacuum also.
On the other hand, sound wave require a medium to travel. sound waves can not travel through vacuum.
I HOPE IT WILL HELP YOU?:-)
