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koban [17]
2 years ago
8

A fifth-grade science class puts half of a white tablet in a test tube with 10 milliliters (mL) of water at 21°C (70°F). The tab

let bubbles rapidly for three minutes until it is gone. Students record the final temperaturo at 20°C (637)
Which choice best identifies evidence that a chemical reaction occurred?
tablet was white
tablet broke in hall
tablet dissolved in the water
change in water temperature
Chemistry
1 answer:
hichkok12 [17]2 years ago
5 0

Answer:

change in water tempreture.

Explanation:

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rjkz [21]
It is true because it just is
3 0
2 years ago
A single covalent bond is made up of​
SIZIF [17.4K]

Answer:

In chemistry, a single bond is a chemical bond between two atoms involving two valence electrons. That is, the atoms share one pair of electrons where the bond forms. Therefore, a single bond is a type of covalent bond.

Explanation:

(copied from Google)

4 0
3 years ago
What is the molarity of a solution that contains 4.3 mol of acetic acid (C2H3O2) in 450. mL of solution?
lord [1]

Hey there !


Number of moles of solution: 4.3 moles

Volume in liters:

450.0 mL / 1000 => 0.45 L

Therefore:

Molarity = number of moles / volume of solution ( L)

Molarity = 4.3 / 0.45

=> 9.55 M

Hope that helps!

3 0
3 years ago
did this and got 8.3 x 10-5 can someone help me figure out how i got this wrong since these are the only answer choices?
Bezzdna [24]
It is b i think bc it looks like it would be it and my tudor helped me
4 0
2 years ago
Plant cells have a large central vacuole, which animal cells lack. What function does this organelle perform?
Lapatulllka [165]
The central vacuole stores materials, wastes, and helps give the plant structure and support.

Hope this helps!
5 0
3 years ago
Read 2 more answers
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