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mestny [16]
3 years ago
10

Please help me guys.

Chemistry
1 answer:
Julli [10]3 years ago
4 0
It doesn’t let me see the picture it’s blurry.
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Jessica has 12.7 moles of a compound for an experiment. How many particles of the compound does she have?
guajiro [1.7K]

Answer:

Number of moles is defined as the ratio of given mass in g to the molar mass.The mathematical expression is given as:

Number of moles  =Number of moles of compound  = 12.7 moles (given)As, 1 mole of any compound is equal to  particles.

where,    is Avogadro number. Formula for calculating particles is given by:

where, N =  number of particles, n = number of moles and  is Avogadro number.

Put the values,=  or  Hence, number of particles of the compound is equal to

Explanation:

8 0
3 years ago
Read 2 more answers
Please help ASAP!!!
77julia77 [94]

Answer: #1 The poppy seeds represent the protons, electrons and neutrons

#2 The fiberfill represents the nucleus   #3 Protons and neutrons are in the nucleus  #4 Electrons are the particles that are surrounding the nucleus  #5 Because they are representing different things and they are their own entity            

     Hope this really does help! : ⊃

5 0
4 years ago
Read 2 more answers
glucose 6‑phosphate+H2O⟶glucose+Pi glucose 6‑phosphate+H2O⟶glucose+Pi K′eq1=270 K′eq1=270 ATP+glucose⟶ADP+glucose 6‑phosphate AT
ddd [48]

Answer:

-30.7 kj/mol

Explanation:

The standard free energy for the given reaction that is the hydrolysis of ATP is calculated using the formula:  ∆Go ’= -RTln K’eq

where,  

R = -8.315 J / mo

T = 298 K

For reaction,

1. K′eq1=270,

∆Go ’= -RTln K’eq

= - 8.315 x 298 x ln 270

=  - 8.315 x 298 x 5.59

= - 13,851.293 J / mo

= - 13.85 kj/mol

2. K′eq2=890

∆Go ’= -RTln K’eq

= - 8.315 x 298 x ln 890

=  - 8.315 x 298 x 6.79

=  - 16.82 kj/mol

therefore, total standard free energy

= - 13.85 + (-16.82)

=  -30.7 kj/mol

Thus, -30.7 kj/mol is the correct answer.

6 0
3 years ago
The solution you identified in question (1) acts as a buffer due to reactions that occur within the solution when an acid or a b
weeeeeb [17]

Answer:

The answer is "\bold{CH_3COO^{-} \ (aq) + H^{+}\ (aq) \longrightarrow CH_3COOH \ (aq)}"

Explanation:

When HCI is added in the chemical equation it reacts with sodium acetate so, it will give the following chemical equation:

CH_3COONa\ (aq) + HCl\ (aq)\longrightarrow CH_3COOH\ (aq) + NaCl\ (aq)\\\\

 In this, the CH_3COOH is a weak acid so, it not completely dissociated.

CH_3COONa \ (aq) \ \ and \ NaCl were strong electrolytes they are completely dissociated.

The HCl is a strong acid so, it is completely dissociated So, the net ionic equation is:

CH_3COO^{-} \ (aq) + H^{+}\ (aq) \longrightarrow CH_3COOH \ (aq)

8 0
3 years ago
After severe dust storms in the 1930s, practices were put in place to reduce soil erosion. Which
timurjin [86]

Answer: Farmers were paid to practice soil-conserving techniques like crop rotation and terracing

Explanation:

read about it here: https://www.pbs.org/wgbh/americanexperience/features/dust-bowl-surviving-dust-bowl/

5 0
3 years ago
Read 2 more answers
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