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
dlinn [17]
3 years ago
11

SCIENCE!!!! PLEASE HELP!!! 20 POINTS

Chemistry
2 answers:
Annette [7]3 years ago
4 0

Answer:

As the Earth rotates, it also moves, or revolves, around the Sun. ... As the Earth orbits the Sun, the Moon orbits the Earth. The Moon's orbit lasts 27 1/2 days, but because the Earth keeps moving, it takes the Moon two extra days, 29 1/2, to come back to the same place in our sky.

Explanation:

sertanlavr [38]3 years ago
3 0
The answer above I believe is correct I was gonna say the same!!! GG
You might be interested in
. Which of the following factors contributes to the increase in lonization energy from left to right across a period?
Lyrx [107]

Answer:

Answer is D

Explanation:

an increase in the number of protons

8 0
3 years ago
Given the following values of pKa, determine which is the weakest base of the answers listed. Acid pKa HClO2 1.95 HClO 7.54 HCOO
professor190 [17]

Answer:

HClO 7.54

Explanation:

Hypochlorous acid (HClO) is a weakest acid because the pKa value of Hypochlorous acid is very high among the options given in the activity. pKa is a method which is used in order to identify the strength of an acid. The higher the value of pKa of a liquid, lower the strength of an acid while lower the value of pKa of chemical, higher the strength of an acid. In the options, HClO2  is a strong acid due to high lower pKa value.

4 0
4 years ago
Does pb(no3)2 + Na3(PO4) = Pb3(PO4)2 + Na(NO3) have a precipitate?
ipn [44]

Answer:

Yes, Pb3(PO4)2.

Explanation:

Hello there!

In this case, according to the given balanced chemical reaction, it is possible to use the attached solubility series, it is possible to see that NaNO3 is soluble for the Na^+ and NO3^- ions intercept but insoluble for the Pb^3+ and PO4^2- when intercepting these two. In such a way, we infer that such reaction forms a precipitate of Pb3(PO4)2, lead (II) phosphate.

Regards!

4 0
3 years ago
If 0.55 g of a gas dissolved in 1.0 l of water at 20.0 kpa of pressure, how much will dissolve at 110.0 kPa of pressure?
GaryK [48]

Answer:sup

Explanation:

4 0
3 years ago
The majority of the elements essential to life are found in what part of the periodic table?
IRINA_888 [86]
The rows in the top third - This group consists of elements like Sodium, Magnesium, Potassium and Calcium on the right and Chlorine, Carbon, Nitrogen and Oxygen on the left.
Sodium and Chlorine are components of salt, a very important compound of our blood, essential for transferring electrical signals from the brain to the rest of the body and vice versa. Calcium is the building block of our bones, while Magnesium and potassium ensure proper functioning of our organs.

3 0
3 years ago
Other questions:
  • What mass is needed for 5000 moles of iron.
    8·1 answer
  • which part of earths interior is inferred to have convection currents that causes tectonic plates to move
    14·1 answer
  • how many milliliters of a stock solution of 2.00M KNO3 would you need to prepare 100.0mL of 0.150M KNO3?
    15·1 answer
  • The body's nervous system is made up of the brain,the spinal cord, the retina ,and many other nerves. The circulatory system is
    13·2 answers
  • 7. (1 point) Colligative properties are directly related to the ____. *
    15·1 answer
  • 1) A light bulb takes in 30 of energy per second. It transfers 3j as use
    7·1 answer
  • During a reaction, the enthalpy of the reactants and the products are not equal. What does this result in?
    15·1 answer
  • What is the relative size of microwaves​
    9·1 answer
  • How many oxygen atoms are there in 1665 grams of iron(II) phosphate? Please explain how you found your answer.
    10·1 answer
  • What is Chemical Bonding?<br>Explain please.​
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!