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
Sholpan [36]
2 years ago
11

HELPPPPPPPP!!!!!!!!!!!!!!

Chemistry
1 answer:
Allushta [10]2 years ago
3 0

Answer:

B

Explanation:

most comets have special stones in them which is a type of metal

You might be interested in
What net ionic equation describes the reaction when these solutions are mixed?
GarryVolchara [31]
Balanced chemical reaction:
2Na₃PO₄(aq) + 3CaCl₂(aq) → 6NaCl(aq) + Ca₃(PO₄)₂(s).
Ionic reaction:
6Na⁺(aq) + 2PO₄³⁻(aq) + 3Ca²⁺(aq) + 6Cl⁻(aq) → 6Na⁺(aq) + 6Cl⁻(aq) + Ca₃(PO₄)₂(s).
Net ionic reaction: 2PO₄³⁻(aq) + 3Ca²⁺(aq) → Ca₃(PO₄)₂(s).
<span>(aq) means that substances are dissociated on cations and anions in water.
</span>(s) means solid.
5 0
3 years ago
How many grams of nitrogen dioxide are required to produce 5.89x10^3 kg of hno3 in excess water
polet [3.4K]
<span>3 NO2 + H2O -------->. 2 HNO3. + NO
3(46g)------------------------> 2 ( 63g) HNO3
? kg-------------------------5.89 x10^3kg HNO3
Mass of NO2. = 5.89x10^3 x 138/ 2(63) = 6.45 x10^3 kg</span>
5 0
3 years ago
PLEASE HELP!!!
neonofarm [45]

Answer:

Cl_2+2NaI\rightarrow I_2+2NaCl

Explanation:

Hello there!

In this case, according to the described chemical reaction, Cl2 replaces iodine in NaI in order to produce I2 and NaCl:

Cl_2+NaI\rightarrow I_2+NaCl

It is possible to realize how chlorine replaces iodine in agreement with the single displacement reaction. Moreover, since chlorine and iodine atoms are not correctly balanced, we add a 2 in front of both NaI and NaCl in order to do so:

Cl_2+2NaI\rightarrow I_2+2NaCl

Best regards!

8 0
2 years ago
Help me plzz it’s for
Rudik [331]
What is it ? I can’t see
5 0
3 years ago
What happens to iron when it melts?
Vilka [71]

As iron heats up, the arrangement of its atoms changes several times before it melts. ... Iron is magnetic at room temperature, and previous work predicted that iron's magnetism favors its open structure at low temperatures, but at 770 degrees Celsius iron loses its magnetism.

plz mark me as brainliest if this helped

8 0
3 years ago
Read 2 more answers
Other questions:
  • In the evolution of extremely large stars, they begin as supergiants or supernovas, if the star nucleus is large enough it will
    7·2 answers
  • Which statement is true according to the kinetic theory?
    11·1 answer
  • Explain why isotopes of the same element behave differently in nuclear reactions but not in chemical reactions
    15·2 answers
  • In a single replacement reaction between 2.57 moles Aluminum and 3.59 moles of Hydrochloric acid, how many moles of Hydrogen can
    5·1 answer
  • What is a concentration in science?​
    9·2 answers
  • PLEASE HELP!! I'LL GIVE BRAINLIEST!! ( I put the other pic because i didn’t know if that was needed for those two questions)
    14·2 answers
  • PLEASE HELP WORTH 100 POINTS !!!!!
    14·2 answers
  • Fill the 2 letter bellow<br><br>h_gs and k_sses<br>​
    9·1 answer
  • What valence electron number do they all have in common
    14·1 answer
  • Answers for Chemistry A/Honors Chem A Unit 2 Test
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!