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aleksklad [387]
2 years ago
14

Scientists' belief that an atom is a solid sphere, is good enough to explain; PLZ I HAVE LESS TIME!!!!

Chemistry
1 answer:
Natasha2012 [34]2 years ago
7 0

Answer:

Its quite vague, instead you could say an atom is the smallest building block which further consists of subatomic particles like protons, neutrons and electrons :)

Hope thi helps :) and I'd appreciate if you'd mark brainliest because ive been stuck on the same rank for quite a long time :(

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A chemistry student weighs out 0.120 g of acetic acid into a 250. mL volumetric flask and dilutes to the mark with distilled wat
Alla [95]

Answer:

28.6 mL

Explanation:

Step 1: Write the balanced neutralization reaction between acetic acid and sodium hydroxide

CH₃COOH(aq) + NaOH(aq) = CH₃COONa(aq) + H₂O(l)

Step 2: Calculate the moles of acetic acid

The molar mass of acetic acid is 60.05 g/mol. The moles corresponding to 0.120 g are:

0.120g \times \frac{1 mol}{60.05g} =2.00 \times 10^{-3} mol

Step 3: Calculate the moles of sodium hydroxide

The molar ratio of CH₃COOH to NaOH is 1:1. The reacting moles of NaOH are 2.00 × 10⁻³ mol.

Step 4: Calculate the volume of the 0.0700 M NaOH solution

2.00 \times 10^{-3} mol \times \frac{1L}{0.0700mol} =0.0286 L = 28.6 mL

4 0
3 years ago
Read 2 more answers
8. How much heat, in kilojoules, is needed to produce 1850 grams of ammonia (NH3),
AleksAgata [21]

Based on the enthalpy of the reaction, 41625 kJ of heat is needed to produce 1850 grams of ammonia (NH3).

<h3>What is heat of reaction?</h3>

The heat of reaction or enthalpy change is the heat absorbed or evolved when reactant molecules react to form products.

According the enthalpy value of the reaction, 4 moles of ammonia require 1530 kJ of heat for its formation.

Molar mass of ammonia = 17 g

Mass of 4 moles of ammonia = 4 × 17 = 68 g

1850 g of ammonia will require = 1850 × 1530/68 = 41625 kJ of heat.

Therefore, 41625 kJ of heat is needed to produce 1850 grams of ammonia (NH3).

Learn more about enthalpy at: brainly.com/question/14047927

#SPJ1

6 0
1 year ago
1.80x1024 molecules of CO2 is equal to how many grams?
olga nikolaevna [1]

Answer:

131.5177 grams

Explanation:

You divide by Avogadro's number to turn it into moles then multiply by molar mass.

7 0
2 years ago
1 What is the approximate mass of a proton?<br> (1)1 u (3) l g<br> (2) 0.0005 u (4) 0.0005 g
joja [24]
Proton mass = 1.672 x 10^-27 kilo. So the approximate mass of a proton would be 1 g or kg.
8 0
3 years ago
Select all of the methods through which a drug can enter your body.
BartSMP [9]

all of the are correct!

8 0
2 years ago
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