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ozzi
3 years ago
15

can someone please help me ill mark brainliest and lots of points please help me someone that likes helping people please help m

ee thank you

Chemistry
2 answers:
ser-zykov [4K]3 years ago
4 0
(1) eyes without magnifying devices
AnnyKZ [126]3 years ago
3 0

Answer:

1) B and 2) D

Explanation:

when scientists refer to the naked eye, it is referring to the eye without any sort of magnifying device, such as a microscope. Algae blooms can result naturally or by human interference

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Write the formulas for the ionic compounds formed by the following:
PSYCHO15rus [73]

1. KI

2. AlBr₃

3. CsNO₃

4. Al₂(CO₃)₃

Explanation:

1. potassium (K⁺) iodine (I⁻) - KI

2. aluminium (Al³⁺) bromine (Br⁻) - AlBr₃

3. caesium (Cs⁺) nitrate (NO₃⁻) - CsNO₃

4. aluminum (Al³⁺) carbonate (CO₃²⁻)  - Al₂(CO₃)₃

Learn more about:

formulas for the ionic compounds

brainly.com/question/13954262

#learnwithBrainly

7 0
3 years ago
A scientist is unsure about the accuracy of her experiment. She has checked her equipment and found it to be in good working ord
polet [3.4K]

Answer:

D

Explanation:

The correct thing to do in this case would be to <u>repeat the experiment.</u>

The scientist would need to repeat the experiment in order to double-check the accuracy. If the accuracy is indeed doubtful, he/she can be able to trace the source of the error by repeating the experiment.

The correct option is D.

8 0
3 years ago
How many joules of heat is lost when a 64 g piece of copper cools from 375 oC to 26 oC? The specific heat of copper is 0.38 J/go
Svetlanka [38]

Answer: 8500 J lost or -8500 J

Explanation:

q=cmt

t=375-26

t=349

q=0.38(64)(349)

q=8487.68 J

Answer must have 2 sig figs, which means it rounds to 8500 J.

7 0
3 years ago
What decides the pitch of sound
dmitriy555 [2]
The vibration objects
3 0
3 years ago
How many grams of CaCl, are needed to make a 15% by mass solution with 520g of water?
allsm [11]

Answer:

many

Explanation:

many many many many

5 0
3 years ago
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