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
SCORPION-xisa [38]
3 years ago
7

We can identify unknown elements in a star by matching the ___________ spectrum of the star to those of known elements. *

Chemistry
1 answer:
const2013 [10]3 years ago
4 0
Emission spectrum, mass spectrum does not make sense and neither does atoms spectrum. You use the emission spectrum to compared known elements in a star to the unknown elements in a star. Hope this help!
You might be interested in
Balancing chemical equations
mojhsa [17]

<span>2H2 + O2 → 2H2O</span>

<span>
</span>

<span>okay???</span>

<span>
</span>

4 0
3 years ago
Thermochemical equations are chemical equations that include the __________ of the reaction.
irga5000 [103]

A Thermochemical Equation is a balanced stoichiometric chemical equation that includes the enthalpy change, ΔH. In variable form, a thermochemical equation would look like this:

A + B → CΔH = (±) #

Where {A, B, C} are the usual agents of a chemical equation with coefficients and “(±) #” is a positive or negative numerical value, usually with units of kJ.


please mark as brainliest

5 0
3 years ago
HELPPP
Ksivusya [100]
3 I’m pretty sure maybe
4 0
2 years ago
C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l)
stiv31 [10]

¹/3 C3H8(g) + ⁵/3 O2(g)

Explanation:

The coefficient before every molecule is representative of the number of moles. We can represent it in ration form so as to calculate the question;

C₃H₈(g) + 5 O₂(g) → 3 CO₂(g) + 4 H₂O(l) means;

For every 1 mole of C₃H₈(g) and 5 moles of  O₂(g) produces  3 moles of  CO₂(g) and 4 moles of H₂O(l).

Therefore to produce 1.00 mole of CO₂(g);

We represent it in ratio;

C₃H₈(g) : CO₂(g)

1  :     3

What about ;

? (x)   :  1

We cross multiply;

3x = 1 * 1

X = 1/3

We evaluate the same for O₂;

O₂(g) : CO₂(g)

5 :     3

What about

? (x) :     1

3x = 5 * 1

x = 5/3

Learn More:

For more on evaluating moles in chemical reactions check out;

brainly.com/question/13967925

brainly.com/question/13969737

#LearnWithBrainly

7 0
3 years ago
Which redox reaction would most likely occur if zinc and copper metal were
sweet-ann [11.9K]

Answer:

C

Explanation:

b/c when copper and zinc metal are addedto solution,then the solution will be consider under redox reaction

5 0
3 years ago
Other questions:
  • A biotic factor in a desert ecosystem would be the
    5·2 answers
  • A horizontal tube carrying hot water has a surface temperature of 355.4 K and an outside diameter
    12·1 answer
  • If you have a gas that starts out with a pressure of 720 mm Hg and a volume of 1500mL, what is the new volume if you increase th
    6·1 answer
  • Which of these equations best summarizes photosynthesis?
    10·1 answer
  • If the [H+] = 0.01 M, what is the pH of the solution, and is the solution a strong acid, weak acid, strong base, or weak base?
    12·1 answer
  • Como lo ago no entiendo​
    9·1 answer
  • 4P+ 5O2 -&gt; P4O10
    15·2 answers
  • Can someone give me an example of balancing equations with a solution that is simple?​
    8·2 answers
  • Which substance is an Arrhenius acid?<br> A) HBr<br> B) NaBr<br> C) NaOH<br> D) NH3
    10·1 answer
  • If the empirical formula of a compound is C2OH4, and the molar mass is 88 g/mol, what is the molecular formula
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!