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
nadezda [96]
3 years ago
5

What describes redshift

Chemistry
1 answer:
ikadub [295]3 years ago
4 0
The red end of the spectrum.
You might be interested in
The atomic number of nitrogen is 7. How many protons, neutrons, and electrons make up an atom of Nitrogen-15?
earnstyle [38]
<h2><u>Answer:</u></h2>

A nonpartisan iota of Nitrogen has a mass of 18. There are 7 protons in the core of this iota. What number of neutrons, complete electrons, and valence electrons are available  

Nitrogen 15 has a nuclear mass of 15. The mass number is # protons in addition to # of neutrons, so for N-15 mass is 15 and the protons are dependably 7 so there must be 15-7=8 neutrons. N-15 has 7 electrons since it has 7 protons and p = e.

6 0
3 years ago
Alchemist made which of the following contributions to the development of chemistry?
a_sh-v [17]
Alchemists advanced the tools and procedures for working with chemicals. Alchemists also developed methods for sorting out mixtures and cleansing chemicals. They designed equipment that is still in use today including beakers, flasks, tongs, funnels, and the mortar and pestle. Also, Alchemists backed to an unbelievable variety of what would later be acquainted as chemical industries: basic metallurgy, metalworking, the invention of inks, dyes, paints, and cosmetics, leather-tanning, and the preparation of extracts and liquors.
6 0
3 years ago
2. Which two particles are found in an atom's nucleus?
lawyer [7]

Answer:The nucleus contains two types of subatomic particles,  

       protons and neutrons.

Explanation:The protons have a positive electrical charge and the neutrons have no electrical charge. A third type of subatomic particle, electrons, move around the nucleus.

3 0
3 years ago
A calcium atom has 20 electrons. An oxygen atom has 8 electrons. Using the electronic structures of Calcium and oxygen explain w
Fittoniya [83]
Maybe this will help you

7 0
3 years ago
A hot air balloon can have a volume of 2950 cubic meters (2.95 ✕ 106 liters) and operate at temperatures up to 250°F (121°C). As
TiliK225 [7]

Answer:

2.64 × 10⁶ g

Explanation:

We can find the mass of air using the ideal gas equation.

P.V=n.R.T=\frac{m}{M} .R.T

where,

P is the pressure (P = 1.00 atm)

V is the volume (V = 2.95 × 10⁶ L)

n is the number of moles

R is the ideal gas constant (0.08206atm.L/mol.K)

T is the absolute temperature (121°C + 273 = 394 K)

m is the mass

M is the molar mass (28.09 g/mol)

m=\frac{P.V.M}{R.T} =\frac{1.00atm \times 2.95 \times 10^{6} L \times 28.97g/mol}{(0.08206atm.L/mol.K) \times 394 K } =2.64 \times 10^{6} g

7 0
3 years ago
Other questions:
  • How many moles in 6.92 L of SO2 gas at STP?
    8·1 answer
  • Which statements describe a good hypothesis? Check all that apply.
    15·2 answers
  • How do scientists think that gravity affected the formation of our solar system?
    13·1 answer
  • The smallest unit that retains the properties of an element is a(n) _____. atom molecule proton compound neutron
    12·1 answer
  • Why is salt water intrusion a big problem in florida?
    5·2 answers
  • - Calculate the molarity of 23 grams of OH in 24<br> of water
    14·1 answer
  • In which region is the substance in both the solid phase and the liquid phase?<br> 1 2 3 4
    11·1 answer
  • Meat-eating animals are:
    5·2 answers
  • If a gas occupies a volume of 6.6 L at 16.0 °C, at what temperature, in °C, will it occupy a volume of 8.9 L if the pressure rem
    6·1 answer
  • Does a displacement reaction take place in iron + sodium chloride? and if so why?
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!