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
Alenkasestr [34]
1 year ago
6

What other missions had been to Mars, and what did they accomplish?

Chemistry
2 answers:
lesya692 [45]1 year ago
5 0

Answer:

they stayed alive?

Explanation:

easy

morpeh [17]1 year ago
4 0

Answer:

yur moms been too mars

Explanation:

You might be interested in
How many moles of H,O must be decomposed to form 200 moles of H,?<br> 24,0 2H +0,
son4ous [18]

Answer:

300

Explanation:

at least 300 molecules

8 0
2 years ago
Is C2H7 ionic or covalent? <br><br> what would you name NO4? <br><br> what would you name MgCl2?
Vlad [161]

C₂H₇ is a covalent compound

N0₄ will be name nitrogen(viii) oxide

MgCl₂ will be named magnesium chloride.

<h3>What are covalent compounds? </h3>

Covalent compounds are compounds which are formed when two electronegative atoms combine together by a sharing of electrons between them.

Covalent compound molecules are usually formed from a combination of non-metals.

The C₂H₇ is a covalent radical formed from the addition of a hydrogen ions to the covalent compound C₂H₆

<h3>What would you name NO₄?</h3>

The name given to a compound depends on the oxidation number of the component elements.

The oxidation number of oxygen is -2.

Since there are 4 atoms of oxygen, the total negative charge is -8.

Nitrogen will have to exist in the +8 state in order to give a neutral compounds.

Therefore, the name given to the compound will be nitrogen (viii) oxide.

<h3>What would you name MgCl₂? </h3>

Magnesium chloride, MgCl₂  is an ionic compound formed from the ionic bond between chlorine and magnesium.

Magnesium donates two electrons to two chlorine atoms to form magnesium chloride, MgCl₂.

Learn more about covalent and ionic substances at: brainly.com/question/18660895

7 0
2 years ago
true or false The atoms in Container A are hydrogen atoms. Hydrogen is a gas. The atoms placed in containers E, F, G, and H will
sleet_krkn [62]

Answer:

False

Explanation:

7 0
2 years ago
Astatine-210 has a half-life of 8.08 days. What fraction of a sample of astatine-210 is left unchanged after 16.16 days?
Flauer [41]

Answer:

0

Explanation:

Given parameters:

Half-life  = 8.08days

Unknown:

What fraction is left unchanged after 16.16days = ?

Solution:

The half - life of a substance is the time taken for the half of a radioactive material to decay to half.

 

  Day 0           Day 8.08         Day 16.16

   100%                 50%                 0%        Parent

    0%                     50%                100%     Daughter

After 16.16 days, non of the original sample will remain unchanged.

6 0
3 years ago
Marking brainlist Why are resources such as coal, oil, or natural gas considered nonrenewable?
crimeas [40]

Renewable and nonrenewable resources are energy sources that human society uses to function on a daily basis. The difference between these two types of resources is that renewable resources can naturally replenish themselves while nonrenewable resources cannot. This means that nonrenewable resources are limited in supply and cannot be used sustainably.

Lol, I hope that was helpful!

3 0
2 years ago
Other questions:
  • Thiamine (vitamin B1) deficiency diseases have a lower prevalence now than in the past. However, they are seen as beriberi in so
    12·1 answer
  • Which chemical formula represents the hydroxide ion? H+ H3O+ H2O OH-
    13·2 answers
  • Why is it impossible to ever prove that a hypothesis is true?
    13·2 answers
  • How could having a knowledge of density be useful in everyday life 
    6·2 answers
  • What particles contribute to the mass of an atom?
    13·2 answers
  • 6. How many moles of Cu(NO3)2 are in 25 ml of a 0.35 M solution of Cu(NO3)2? a) How many moles of NO3- are present in 25 ml of t
    11·2 answers
  • How many moles are in 1.80g of N2?​
    13·2 answers
  • An animal is an example of a/an-<br><br> A: tissue <br> B:cell type<br> C:organ<br> D:organism
    6·2 answers
  • What are the chemical properties of acids​
    6·1 answer
  • It takes 50.0 J to raise the temperature of an 10.6 g piece of unknown metal from 13.0°C to 24.9 °C.
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!