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AlekseyPX
3 years ago
5

Which is a strong base? C C OHCI O NAOH NH3 O H2CO3

Chemistry
1 answer:
NISA [10]3 years ago
8 0

Answer:

NH3

Explanation:

hope this will help u

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Astatine belongs to which element group: nonmetal, halogen, noble gas?
Mkey [24]

Answer:

halogen

Explanation:

It belongs to Group 17 on the periodic table, which is a halogen

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3 years ago
Weak acids
maria [59]

Answer:

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3 years ago
Which of the following rules should you follow to balance chemical equations?
Firdavs [7]

Answer:

c. add coefficients as needed

Explanation:

A chemical equation is defined as the equation that shows changes in a chemical reaction. A chemical equation consist of reactant and product, reactant is at left side of the arrow and product is at right side of the arrow.

Reactant => Product

While balancing a chemical equation, the basic rule is to balance the coefficient as required. Coefficient represents the number of molecules and is used at front of a chemical symbol. Change in coefficient helps balance the number of atoms or molecules of the substances on both the sides of the arrow.

Subscripts are never allowed to change because it can change the chemical involved in the reaction.

Hence, the correct answer is "c. add coefficients as needed".

3 0
3 years ago
DNA replication results in two identical DNA molecules. What role do DNA helicases have in DNA replication?
PilotLPTM [1.2K]
I'm pretty sure since one chemical can only bind with one other type, um, I think that one side of the DNA helicase helps make the other side?
8 0
4 years ago
Read 2 more answers
Which of the following are second-order reactions? a. C2H6 → 2 CH3 b. 2 N2O5 → 4 NO2 + O2 c. 2 HI → H2 + I2 d. 2 N2O → 2 N2 + O2
Klio2033 [76]

Answer:

The answer is b, c, d, e

Explanation:

b. 2 N2O5 → 4 NO2 + O2

r = k [N2O5]^2 --> Second-order regarding global reaction

c. 2 HI → H2 + I2

r = k [HI]^2 --> Second-order regarding global reaction

d. 2 N2O → 2 N2 + O2

r = k [N2O]^2 --> Second-order regarding global reaction

e. 2 NO2 → 2 NO + O2

r = k [NO2]^2 --> Second-order regarding global reaction

8 0
3 years ago
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