Question and answer
A substance that turns litmus paper blue and contains hydroxide ions is most likely A. a salt. B. an acid. C. a base. D. water.
If you find that a substance turns litmus paper to blue and contains hydroxide ions, it is most likely: a BASE.
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|Score 1|Janet17|Points 42177|
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Asked 6/17/2019 8:54:27 AM
Updated 6/17/2019 10:18:24 AM
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This answer has been confirmed as correct and helpful.
Confirmed by MrG [6/17/2019 10:18:24 AM]
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The transmission of heat requiring the movement of a liquid or a gas is A. radiation. B. transduction. C. conduction. D. convection.
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Updated 107 days ago|4/8/2021 2:30:17 AM
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The main difference between turbojets and rocket engines is the fact that A. rocket engines need oxygen from the air. B. rocket engines aren't dependent on oxygen from the air. C. turbojets aren't dependent on oxygen from the air. D. turbojets carry their own supply of oxygen as oxidizers.
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Updated 237 days ago|11/28/2020 4:57:39 PM
1 Answer/Comment
The main difference between turbojets and rocket engines is the fact that rocket engines are not dependent on oxygen from the air.

Added 237 days ago|11/28/2020 4:57:39 PM
This answer has been confirmed as correct and helpful.
Which one of the following substances is a liquid fuel used in rocket engines? A. Potassium perchlorate B. Liquid oxygen C. Ammonia D. Sodium nitrate
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Updated 237 days ago|11/28/2020 4:57:54 PM
1 Answer/Comment
Liquid oxygen is a liquid fuel used in rocket engines.
Added 237 days ago|11/28/2020 4:57:54 PM
This answer has been confirmed as correct and helpful.
During the stage of internal-combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, A. the intake valve is open, and the exhaust valve is closed. B. both the intake and exhaust valves are open. C. both the intake and exhaust valves are closed. D. the exhaust valve is open, and the intake valve is closed.
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Updated 352 days ago|8/5/2020 1:05:01 PM
1 Answer/Comment
During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, both valves will be closed.

Added 352 days ago|8/5/2020 1:05:01 PM
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Convert the temperature 288 K to degrees Celsius. A. 561°C B. 748°C C. –172°C D. 15°C
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