Answer:
Explanation:
i am thinking 3 and 2 but i am gonna say it is 2
98.654321%
Answer:
Both Jack and Jane are correct. Unprocessed oil, petroleum, is a mixture of organic compounds that need to be isolated or separated to be used.
Explanation:
Which example is a body fossil?
shrimp burrow
dinosaur bone
dinosaur footprint
an ornithopod track
Answer: B. dinosaur bone
Explanation: Took the test hope this helps! :)
Temperature and kinetic energy have a relationship.
Answer:
[tex]\boxed {\boxed {\sf Temperature=Average \ kinetic \ energy}}[/tex]
Explanation:
Temperature is also known as the average kinetic energy in a substance.
If there is an absence of heat in a substance, the particles move slower and the kinetic energy decreases. The temperature will be lower, because there is less kinetic energy.
If heat is present or applied, the particles move more, so kinetic energy increases. The temperature will be higher, since there is more kinetic energy.
So, the relationship is: temperature is the measure of average kinetic energy.
Answer:
DIRECT
Explanation:
Tin-126 has a half life of 100,000 years. How many years does it take to
reduce 100 g of Tin-126 to 12.5 g?
100,000 years
200,000 years
50,000 years
300,000 years
Answer:
300,000 years
Explanation:
100g=0 years
50g=100,00 years
25g=200,00 years
12.5g=300,000 years
PLEASE HELP WITH THESE THREE (30 POINTS)
1) How is the number of neutrons in the nucleus of an atom calculated?
A. Add the number of elections- and protons+ together
B. Subtract the number of elections- from protons+
C. Subtract the number of protons+ from the atomic mass number
D. Add the atomic mass number to the number of elections-
2) Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same group on the periodic table. Why? *
A. They have the same size.
B. They react with each other.
C. They have similar properties.
D. They have the same number of protons
3) Which of the following elements would be a transition metal?
A. Ca
B. Au
C. Rb
D. Fr
QUESTION 8: When would acceleration increase most? *
2 points
Rolling along a flat plane
Rolling down a steep hill
Braking to a stop
Rolling up a gently sloping hill
Answer:
Rolling down a steep hill
Explanation:
Which of these items found on a food label IS NOT a food?
Calories
Sugar
Proteins
Total fats
Answer:
the first one Calories
Which orbital can be modeled by a "peanut" shape?
Answer:
d - orbital
Explanation:
The d-orbital can modelled by a peanut shape.
A peanut shape closely resembles the shape of a double dumb-bell shape. The double dumb-bell shape is like that of a peanut.
The s-orbital has a spherical shape. p - orbital is dumb-bell shapedd - orbital is a double dumbellf - orbital has a complex shape.Therefore, since a peanut is like a double dumb-bell, it clearly models the d-orbital.