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
Alex73 [517]
3 years ago
5

Ms. Clark added a spoonful of baking soda and then poured a little vinegar into the cup. We observed fizzing and bubbling. Based

on what we saw or observed, we decided that a new substance was formed by mixing the baking soda and vinegar. How do we know that? O A gas formed. o It was magnetic. It was a conductor. o It was hot. 0 It changed colors to pink.​
Chemistry
1 answer:
leva [86]3 years ago
7 0

Answer:

we know that it was the vinegar and baking soda because gas had been created, the gas was held within the bubbles. the gas that was created was called Carbon Dioxide or CO2

You might be interested in
The electron configuration for aluminum (Al) is shown below:
Serjik [45]

Answer:

It is the third choice

Explanation:

Just did assignment

3 0
4 years ago
What do you look at to tell the reactivity of an atom?
tia_tia [17]

Answer:

The number of electrons in the outermost shell of an atom determines its reactivity. Noble gases have low reactivity because they have full electron shells. Halogens are highly reactive because they readily gain an electron to fill their outermost shell.

Explanation:

I hope this helped!

8 0
3 years ago
Under standard-state conditions, which of the following species is the best reducing agent? a. Ag+ b. Pb c. H2 d. Ag e. Mg2+
eimsori [14]

<u>Answer:</u> The correct answer is Option b.

<u>Explanation:</u>

Reducing agents are defined as the agents which help the other substance to get reduced and itself gets oxidized. They undergo oxidation reaction.

X\rightarrow X^{n+}+ne^-

For determination of reducing agents, we will look at the oxidation potentials of the substance. Oxidation potentials can be determined by reversing the standard reduction potentials.

For the given options:

  • <u>Option a:</u>  Ag^+

This ion cannot be further oxidized because +1 is the most stable oxidation state of silver.

  • <u>Option b:</u>  Pb

This metal can easily get oxidized to Pb^{2+} ion and the standard oxidation potential for this is 0.13 V

Pb\rightarrow Pb^{2+}+2e^-;E^o_{(Pb/Pb^{2+})}=+0.13V

  • <u>Option c:</u>  H_2

This metal can easily get oxidized to H^{+} ion and the standard oxidation potential for this is 0.0 V

H_2\rightarrow 2H^++2e^-;E^o_{(H_2/H^{+})}=0.0V

  • <u>Option d:</u>  Ag

This metal can easily get oxidized to Ag^{+} ion and the standard oxidation potential for this is -0.80 V

Ag\rightarrow Ag^{+}+e^-;E^o_{(Ag/Ag^{+})}=-0.80V

  • <u>Option e:</u>  Mg^{2+}

This ion cannot be further oxidized because +2 is the most stable oxidation state of magnesium.

By looking at the standard oxidation potential of the substances, the substance having highest positive E^o potential will always get oxidized and will undergo oxidation reaction. Thus, considered as strong reducing agent.

From the above values, the correct answer is Option b.

8 0
3 years ago
Using wolfram alpha or some other reference, determine which of these elements would be liquid at 525 k (assume samples are prot
romanna [79]
The choices for this problem are bismuth, Bi; platinum, Pt; selenium, Se; calcium, Ca and copper, Cu. I think the correct answer would be selenium. The melting point of bismuth is at a temperature of 544.4 Kelvin. At a temperature of 525 K, it would exist as solid. Platinum melts at 2041.1 K. At 525 K, platinum would be in solid form. Selenium has a melting point at 494 K so that at a temperature of 525 K, it would exist in its liquid state. Calcium has a melting point of 1112 K so it would exist as solid at 525 K. Copper has a melting point at 1358 K, so it would still exist as solid at a temperature of 525 K. Therefore, the answer would only be selenium.
3 0
3 years ago
What is the charge associated with each side of the HBr molecule?
nevsk [136]

Answer:

Partial positive on hydrogen and partial negative charge on oxygen atom

Explanation:

5 0
3 years ago
Other questions:
  • How many grams of KBr are required to make 550. mL of a 0.115 M KBr solution?
    12·1 answer
  • An atom has the same number of wich two particles?
    6·1 answer
  • Why are hydrogen ions and hydroxide ions omitted from the net reaction for the hydrolysis of water?
    6·2 answers
  • According to Newton's law of universal gravitation, the Sun would have
    7·1 answer
  • Which of the following molecules contains a nonpolar covalent bond?
    14·2 answers
  • How many valence electrons does an atom of al possess?
    8·1 answer
  • If cobalt metal is mixed with excess sulfur and heated strongly, a sulfide is
    13·1 answer
  • 3. DNA replication occurs:
    7·1 answer
  • Based on context clues what is the meaning of tête-à-tête
    15·2 answers
  • The equation for electrical power is<br> A. P=FV<br> B. P=IV<br> C. P = VI<br> D. P= IV
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!