Use the chemical reaction to answer the question.

Answer:

60 grams

Explanation:

Which contributions did Johannes Kepler make? Check all that apply.

Which contributions did Johannes Kepler make? Check all that apply.

He revived Aristotle’s model of the solar system.
He solved Ptolemy’s model by proving elliptical orbits.
He proved Galileo’s calculations were incorrect.
He determined that planets move faster when closer to the Sun.
He discovered laws of planetary motion.

urgenttt helpppp!!!!!!!!!!!!!!!!!!!!!!!!
a studentistrying to design an artificial eardrum for their science fair project. they made their eardrum hollow to cut down on cost and weight. when they tested how long it took to test the subject to hear deep, they found that their control ear drum made out of wood did better than their created one. the temperature that day wa 98 fahrenheit.
determine which statement supports the students findings.
a.the created eardrum performed worst because sound travels faster in solids due to large distance between the particals
b. the created eardrum performed worst because sound travels faster in solids due to the small distance between the particles.
c.the created eardrum performed worst because sound travels slower in air due to the small distance between the particles.
d.the created eardrum performed worst because sound travels slower through air in high temperatures due to the particles moving slower.

True or False this is a black hole 75 points + Brainliests

Can someone help me


Which of the following would a good frame of reference?

A) the moon

B) a tree

C) a rabbit

D) your sister while she rides her bike

IF YOU PASS SCIENCE TEST HELP ME PLEASE!!!
refer to the data table below. According to the data, what conclusion can be drawn from the data table below?
A. sound doesn't travel through human beings at all
B. sound travels through human beings faster than through cork.
C. sound travels through human beings slower than through a cork
D. sound travels through human being

The blue mass in the image is 10kg.


The red mass in the image is 10kg.


The blue mass is currently 4 meters away from the red mass.


If we change each mass to 20kg, what will happen to the gravitational force each mass puts on the other?? You have to pick a answer through A,B,C! The force of gravity will increase as the masses increase.



The force of gravity will not change as the masses increase.



The force of gravity will decrease as the masses increase.

Venn diagrams are used for comparing and contrasting different topics. The overlapping sections show characteristics that the topics have in common, and the sections that are unique to each topic show the characteristics apply to only that topic.

Overlapping circles are labeled solid on top, liquid at right, gas at left, with the intersection of all three labeled state of matter.
Which Venn diagram accurately describes what characteristics of solids, liquids, and gasses could be added to this diagram?

Overlapping circles are labeled definite shape most dense at top, mid-level density at right, definite volume least dense at left, with the intersection labeled state of matter.
Overlapping circles are labeled definite shape most dense at top, mid-level density at right, least dense at left, with the intersection of all three labeled state of matter. The intersection of the top and right circles is labeled definite volume.
Overlapping circles are labeled definite shape most dense at top, definite volume mid-level density at right, least dense at left, with the intersection of all three labeled state of matter. The intersection of the left and right circles is labeled definite shape.
Overlapping circles are labeled definite shape least dense at top, definite mid-level density at right, most dense at left, with the intersection of all three labeled state of matter. The intersection of the left and right circles is labeled definite shape.

PLEASE HELP! 20 POINTS!


Amy and Chris took different routes to travel from Point A to Point E. Amy took the route along A, B, C, D, and E and reached the destination in 2 hours. Chris took the route along A, G, F, and E and reached the destination in 3 hours. Their routes are shown.



Which conclusion is correct?


Amy's average speed is twice Chris's average speed.

Chris's average speed is twice Amy's average speed.

Amy's average speed is equal to Chris's average speed.

Chris's average speed is three times Amy's average speed.

Two laws are described below:

Law A: It can be broken under certain conditions.
Law B: It does not focus on a natural phenomenon.

Based on these characteristics, what can you conclude about Law A and Law B?

Both Law A and Law B are societal laws.
Both Law A and Law B are scientific laws.
Law A is a scientific law and Law B is a societal law.
Law A is a societal law and Law B is a scientific law.

Where in the eye are rods and cones located?

cornea

retina

lens

iris


WILL GIVE BRAINLIEST!