4 Look at the images below. Tuba 1 and Tuba 2 are both made of brass. Tuba 2 used to be similar in color to Tuba 1.
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Tuba 1
Tuba 2
What chemical change caused Tuba 2's change in appearance?
What chemical change caused Tuba 2’s change in appearance

In 1870, which path would settlers moving west from el paso to los angeles have followed? a) old spanish trail b) gila trail c) california trail d) oregon trail

What is the y-coordinate of the point that divides thedirected line segment from j to k into a ratio of 2.3? -6-557

If you could drill a hole straight to the center of the earth, and keep track of what the hole is going through, youwould find: a) you would go through one sort of material, and then a different, denser material, and then a still-different, still-denser material, because the planet is made of concentric layers, sort of like an onion.b) you would go through one sort of material all the way to the center, because the planet is all mixed up.c) if your hole started at the north pole, you would go through different layers of different materials, but ifyour hole started at the equator, you would go through one sort of material all the way to the center.d) if your hole started at the equator, you would go through different layers of different materials, but if yourhole started at the north pole, you would go through one sort of material all the way to the center.e) you would strike diet pepsi when you got to the center.