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Eddi Din [679]
3 years ago
11

I need help with this.

Chemistry
2 answers:
Irina-Kira [14]3 years ago
8 0

Answer:

C . Tungsten

Explanation:

I hope this helps im not sure

Phoenix [80]3 years ago
4 0

Answer:

can you show a clearer picture of the chart?

Explanation:

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What is the precipitate for CuSO4+NaOH<br> (Balancing Equations)
jeka57 [31]

Answer:

CuSO4 + 2NaOH → Cu(OH)2 + Na2SO4

Explanation:

5 0
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Given the following values of pKa, determine which is the weakest base of the answers listed. Acid pKa HClO2 1.95 HClO 7.54 HCOO
professor190 [17]

Answer:

HClO 7.54

Explanation:

Hypochlorous acid (HClO) is a weakest acid because the pKa value of Hypochlorous acid is very high among the options given in the activity. pKa is a method which is used in order to identify the strength of an acid. The higher the value of pKa of a liquid, lower the strength of an acid while lower the value of pKa of chemical, higher the strength of an acid. In the options, HClO2  is a strong acid due to high lower pKa value.

4 0
3 years ago
How much energy is required to raise the temperature of 0.2 kg of aluminum
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B. 538 j hoped this helps
3 0
3 years ago
A solar panel combines multiple photovoltaic cells. Which type of energy is used to power a solar panel? kinetic energy thermal
fredd [130]
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The solar panel usually combines multiple photo voltaic cells. Electromagnetic energy is used to power a solar panel. As the electromagnetic energy or rather radiations from the sun reaches to Earth in the form of radiation which is then collected by these photo voltaic cells. As the term solar energy simply suggests that the energy is coming from the sun. Thus, electromagnetic energy coming from the sun was produced when electric charges inside the sun change their potential energy.

6 0
2 years ago
Which statement about the elements in the periodic table is true
egoroff_w [7]

A. The number of valence electrons increases as atomic mass increases. == Generally true for the representative elements since atomic mass generally increases with increasing Z.  

B. The reactivity of alkali metals increases as atomic mass increases. == True. Atomic mass increases down the column and so does reactivity  

C. The reactivity of the halogens increases as atomic mass increases. == False. Reactivity decreases down the column.  

D. The number of valence electrons decreases across a period. == False. In general, the number of valence electrons increases across a period, particularly for the representative elements.

6 0
3 years ago
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