1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Bas_tet [7]
3 years ago
15

I need these done please

Chemistry
2 answers:
valkas [14]3 years ago
8 0

Answer:

A, it is metal oxide

Likurg_2 [28]3 years ago
5 0
A is metal oxide jdjdjdh
You might be interested in
How many grams of sodium carbonate are produced when 5.3 moles of sodium phosphate reacts with aluminum carbonate?
Korvikt [17]

Answer: There is 842.54 grams of sodium carbonate are produced when 5.3 moles of sodium phosphate reacts with aluminum carbonate.

Explanation:

Chemical equation depicting reaction between sodium phosphate and aluminum carbonate is as follows.

Al_{2}(CO_{3})_{3} + 2Na_{3}PO_{4} \rightarrow 2AlPO_{4} + 3Na_{2}CO_{3}

As this equation contains same number of atoms on both reactant and product side. So, this equation is a balanced equation.

According to the equation, 2 moles of sodium phosphate is giving 3 moles of sodium carbonate.

Therefore, sodium carbonate formed by 5.3 moles of sodium phosphate is as follows.

\frac{3}{2} \times 5.3 mol\\= 7.95 mol

As number of moles is the mass of substance divided by its molar mass. So, mass of sodium carbonate ( molar mass = 105.98 g/mol) is as follows.

No. of moles = \frac{mass}{molar mass}\\7.95 mol = \frac{mass}{105.98 g/mol}\\mass = 842.54 g

Thus, we can conclude that there is 842.54 grams of sodium carbonate are produced when 5.3 moles of sodium phosphate reacts with aluminum carbonate.

8 0
3 years ago
Is the photon is in the IR, UV or visible portion of the electromagnetic spectrum.
DiKsa [7]

Answer:

The different types of radiation are defined by the the amount of energy found in the photons. Radio waves have photons with low energies, microwave photons have a little more energy than radio waves, infrared photons have still more, then visible, ultraviolet, X-rays, and, the most energetic of all, gamma-rays.Explanation: hope this helps god bless you

8 0
2 years ago
Anna is excited about conducting her lab today. She takes out her lab sheet and reads over the lab. She goes and gathers all of
trapecia [35]

Answer:

Anna didn't wear a lab coat

Explanation:

The first thing anyone who is to carry out a procedure or an experiment in a lab needs to do when he/she enters a lab is to wear a lab coat. This is a lab safety rule that protects the individual from been affected by spillage that could occur as a result of the experiment been conducted.

From the narration in the question, <u>it is not stated anywhere that Anna wore a lab coat before embarking on her lab procedure</u>.

6 0
3 years ago
Which of the following aqueous solutions are good buffer systems?
garri49 [273]

The following aqueous solutions represents good buffer systems:

  • 0.22 M acetic acid + 0.15 M potassium acetate
  • 0.29 M ammonium nitrate + 0.32 M ammonia

<h3>What is a buffer?</h3>

A buffer is a solution used to stabilize the pH (acidity) of a liquid.

A good buffer system is generally known to contain close or equal concentrations of a weak acid and its conjugate base.

Based on the above explanation, the following represents a good buffer system as they are between their weak acid and conjugate base:

  • 0.22 M acetic acid + 0.15 M potassium acetate
  • 0.29 M ammonium nitrate + 0.32 M ammonia

Learn more about buffer at: brainly.com/question/22821585

#SPJ1

8 0
2 years ago
How many neutrons in the following elements below
Wittaler [7]

Answer:

its atomic number is 92 and its atomic mass is 238(92+146).

Explanation:

For example,Silicon has 14 protons and 14 neutrons.its atomic number is 14 and its atomic mass is 28

8 0
3 years ago
Other questions:
  • True or false a mixture is made of two or more elements that are chemically combined
    5·1 answer
  • What do radio waves and gamma rays have in common?
    12·2 answers
  • Please help I suck at chemistry
    9·2 answers
  • What’s the electron configuration of an N-3 ion
    10·1 answer
  • ¿Cuáles son las grasas e hidróxidos más efectivos en la elaboración de jabón?
    14·1 answer
  • What is uranium classified as
    5·1 answer
  • What is an indication that a lake is healthy?
    5·2 answers
  • Which statement describes the ocean floor?
    15·1 answer
  • Can someone plz help Me? :(
    5·2 answers
  • Which of the following elements has the highest 1st ionization energy of all the periodic table elements?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!