Answer:
2.24 g
Explanation:
First we use the<em> PV=nRT</em> formula to <u>calculate the number of moles of the gas</u>:
- 0.957 atm * 1.30 L = n * 0.082 atm·L·mol⁻¹·K⁻¹ * 298 K
Then we can use the<em> given molar mass</em> to <u>calculate the mass</u>:
- Molar Mass = Mass / number of moles
- 44.01 g/mol = Mass / 0.0509 mol
Answer:
Crystallization is the solidification of atoms or molecules into a highly structured form called a crystal.
Explanation:
Organic chemistry is the scientific study of the structure, properties, composition, reactions, and synthesis of organic compounds
Answer:
a. nitrogen is the correct answer.
Explanation:
- Nitrogen is a macronutrient because nitrogen present in the plant in large quantities.
- Macronutrients are the nutrients which are needed in large amount for the proper growth and development,as they are required in large amounts they are called macronutrients.
- Macronutrients are the most essential elements for plants and required so that body functions properly.
- Macronutrients comprise carbon, nitrogen, sulfur, oxygen, potassium, hydrogen, calcium, phosphorus and magnesium.
Answer:
62.9%
Explanation:
Step 1: Given data
- Mass of hydrate sodium carbonate (mNa₂CO₃.xH₂O): 71.5 g
- Mass of anhydrous sodium carbonate (mNa₂CO₃): 26.5 g
Step 2: Calculate the mass lost of water
We will use the following expression.
mH₂O = mNa₂CO₃.xH₂O - mNa₂CO₃
mH₂O = 71.5 g - 26.5 g = 45.0 g
Step 3: Calculate the percent of water in the hydrate sodium carbonate
We will use the following expression.
%H₂O = mH₂O / mNa₂CO₃.xH₂O × 100%
%H₂O = 45.0 g / 71.5 g × 100%
%H₂O = 62.9%