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Varvara68 [4.7K]
3 years ago
15

The highly reactive elements in group 7A are known for forming salts. What are they called? transition metals metalloids halogen

s noble gases
Chemistry
1 answer:
liberstina [14]3 years ago
4 0
The group 7A elements are called Halogens. 

Please mark as brainliest if this helped! :)
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(110.3 g) + (45.27 g) + (54.43 g)
Darina [25.2K]

Answer:

210 grams

Explanation:

just add them all up

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3 years ago
determine the final temperature of a 10-0-g aluminum block originally at 25.0°C if you apply 435 joules of energy to it
mihalych1998 [28]
<span>Energy = Mass * heat capacity * temperature change so, 
</span>The energy added is 435 J and the temperature has to increase since the energy is added. 

<span>435 J = 10.0 g * 0.89 J/gC * temperature change </span>

<span>Temperature change = 48.9 C </span>

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5 0
4 years ago
Enolase, an enzyme that catalyzes the conversion of 2-phosphoglycerate to phosphoenolpyruvate: Group of answer choices demonstra
Tanzania [10]

Answer:

Requires two Mg²⁺ cofactors and as such demonstrates metal-ion catalysis

Explanation:

Electrostatic catalysis or metal ion catalysis is a catalytic mechanism that makes use of metalloenzymes, such as enolase along with a metal ion which is bound tightly, including, Mo⁶⁺, Ni³⁺, Co³⁺, Mn²⁺, Zn²⁺, Cu²⁺, and Fe²⁺, to undertake a catalysis

For maximal activity, enolase requires the presence of 2 equivalent metal ions in each site which is active

Therefore, the correct option is; requires two Mg²⁺ cofactors and as such demonstrates metal-ion catalysis

5 0
4 years ago
A tablet of Pain Be Gone Aspirin, which had a mass of 1.213 g, was pulverized and 1.159 g were dissolved in 10.0 mL of ethyl alc
allochka39001 [22]

Answer:

Moles of NaOH that reacted: n_{NaOH}=1.64*10^{-3}mol

Explanation:

During the  titration, all moles of NaOH added in the solution, react with the acetylsalicylic acid neutralizing each other.

The titration required 15.62 ml (0.01562 L) of the 0.1052 M NaOH solution. The moles of NaOH in that volume are:

n_{NaOH}=0.01562 L * \frac{0.1052mol}{L}

n_{NaOH}=1.64*10^{-3}mol

8 0
3 years ago
What is the volume of a 28g object that has a physical property of .45g / m * L ?
sammy [17]

Answer:

12.6 grams

Explanation:

this is filler so I can send the answer and also can I get brainliness

6 0
3 years ago
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