Answered

Discover the answers you need at Westonci.ca, where experts provide clear and concise information on various topics. Get immediate and reliable solutions to your questions from a community of experienced experts on our Q&A platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

What is the percent of hydrogen by mass in HNO3?

Sagot :

Naeemashan573

the percent of hydrogen by mass in HNO3 is 1.600%

Sarah06109

Answer:

[tex]\boxed {\boxed {\sf 1.5996953 \%\ or \ 1.6 \%}}[/tex]

Explanation:

Percent composition tells us the mass percentage of an element in a compound. It can be found by dividing the mass of the element by the mass of the compound, then multiplying by 100.

[tex]\frac{element \ mass}{compound \ mass} *100[/tex]

1. Compound Mass

The compound given is HNO₃

  • Hydrogen (H) and Nitrogen (N) have no subscript, implying there is 1 atom of each element.
  • Oxygen (O) has a subscript of 3, so there are 3 atoms.

Use the Periodic Table to find the masses of each element.

  • Hydrogen: 1.008 u
  • Nitrogen: 14.007 u
  • Oxygen: 15.999 u

Next, multiply each element's mass by the number of atoms, then add them together.

  • (1.008 u) + (14.007 u) +  (3 * 15.999 u)
  • 63.012 u

2. Percent Composition

Now we know that HNO₃'s mass is 63.012 u. This is the compound mass.

We want to find the percent of hydrogen and its mass is 1.008 u. This is the element mass.

[tex]\frac{1.008 \ u }{63.012\ u } *100[/tex]

[tex]0.015996953*100[/tex]

[tex]1.5996953[/tex]

This can be rounded to the nearest tenth. The 9 in the hundredth place tells us to round the 5 to a 6.

[tex]\approx 1.6[/tex]

The percent of hydrogen in HNO₃ is 1.5996953% or about 1.6%

We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We appreciate your visit. Our platform is always here to offer accurate and reliable answers. Return anytime. We're dedicated to helping you find the answers you need at Westonci.ca. Don't hesitate to return for more.