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
mash [69]
3 years ago
13

The equation shown represents cellular respiration. Glucose + X → Y + Water + Energy What do X and Y most likely represent? X re

presents carbon dioxide and Y represents sugar. X represents oxygen and Y represents carbon dioxide. X represents sunlight and Y represents hydrogen gas. X represents hydrogen and Y represents carbon dioxide.
Chemistry
1 answer:
777dan777 [17]3 years ago
4 0

Answer:

X represents oxygen and Y represents carbon dioxide.

Explanation:

Because in respiration, you consume oxygen and make carbon dioxide whereas, in photosynthesis, the equation is reversed and you use carbon dioxide and make oxygen and glucose.

You might be interested in
Nitrogen has two isotopes. One has an atomic mass of 14.003
Ilia_Sergeevich [38]

Answer:

d= 14.007 amu

Explanation:

Abundance of N¹⁴ = 99.63%

Abundance of N¹⁵ = 0.37%

Atomic mass of N¹⁴ = 14.003 amu

Atomic mass of N¹⁵ = 15.000 amu

Average atomic mass = ?

Solution:

Average atomic mass = (abundance of 1st isotope × its atomic mass) +(abundance of 2nd isotope × its atomic mass)  / 100

Average atomic mass = (14.003 × 99.63)+(15.000× 0.37) /100

Average atomic mass =  1395.12 + 5.55 / 100

Average atomic mass  = 1400.67/ 100

Average atomic mass = 14.007 amu.

6 0
2 years ago
Determine the number of protons and electrons for La3+
Yanka [14]

Answer:

Ag+ = 47 electrons - 1 electron = 46 electrons. Finally: 47 protons , 61 neutrons and 46 electrons.

Explanation:

7 0
2 years ago
Which substance is a compund
Oxana [17]
Answers:
______________________________________________
  1)   [D]:  " CO₂ " .  

<u>Note:</u><u> </u> This is the only answer choice given that is composed of:  "at least two different elements" .
_______________________________________________
  2)  [D]:  "carbon and hydrogen" {"C" and "H" .} .
_______________________________________________
7 0
3 years ago
Calculate the amount of HCN that gives the lethal dose in a small laboratory room measuring 12.0 ft×15.0 ft×8.60ft.
garik1379 [7]

<u>Given:</u>

Dimensions of the room= 12 ft * 15 ft * 8.60 ft

<u>To determine:</u>

The amount of HCN that gives the lethal dose in the room with the given dimensions

<u>Explanation:</u>

As per the World Health Organization, the lethal dose of HCN is around 300 ppm

300 ppm = 300 mg of HCN/ kg of inhaled air

Volume of air = volume of room = 12 * 15 *8.6 = 1548 ft³

Now,  1 ft³ = 28316.8 cm³

Therefore, the calculated volume of air corresponds to:

1548 * 28316.8 = 4.383 * 10⁷ cm3

Density of air (at room temperature 25 C) = 0.00118 g/cm3

Thus mass of air corresponding to the calculated volume is

Mass = Density * volume = 0.00118 g/cm3 * 4.383 * 10⁷ cm3

= 5.172*10⁴ g = 51.72 kg

Lethal amount of HCN corresponding to 51.72 kg of air would be.

= 51.72 kg air* 300 mg of HCN/1 kg air = 15516 mg

Ans: Lethal dose of HCN = 15.5 g

7 0
3 years ago
) PABA refers to para-aminobenzoic acid which is used in some sunscreen formulations. If a 0.055 M solution of PABA has a pH of
AleksandrR [38]

Answer: K_a of PABA is 0.000022

Explanation:

NH_2C_6H_5COOH\rightarrow H^++NH_2C_6H_5COO^-

  cM              0             0

c-c\alpha        c\alpha          c\alpha

So dissociation constant will be:

K_a=\frac{(c\alpha)^{2}}{c-c\alpha}

Give c= 0.055 M and \alpha = ?

K_a=?

pH=-log[H^+]

2.96=-log[H^+]

[H^+]=1.09\times 10^{-3}

[H^+]=c\times \alpha

1.09\times 10^{-3}=0.055\times \alpha

\alpha=0.02

Putting in the values we get:

K_a=\frac{(0.055\times 0.02)^2}{(0.055-0.055\times 0.02)}

K_a=0.000022

Thus K_a of PABA is 0.000022

5 0
2 years ago
Other questions:
  • 26.2 g piece of copper metal is heated from 21.5°C to 201.6°C. Calculate the amount of heat absorbed by the metal. The specific
    15·1 answer
  • Plants and animals use different energy storage molecules, yet they both use the same mechanism to "burn" their stored energy. H
    8·1 answer
  • Iron and vanadium both have the BCC crystal structure and V forms a substitutional solid solution for concentrations up to appro
    12·1 answer
  • Which of the following uses a nonrenewable energy resource to generate energy? A. nuclear power plant B. wind farm C. fireplace
    12·1 answer
  • At the melting point of a substance, temperature ______ as heat is being added and the substance is changing from a solid to a l
    15·2 answers
  • Which organisms in soil helps relieve element so they can be recycled
    12·1 answer
  • QUestion 6 and 7
    11·2 answers
  • 6. Menthol is a member of the terpene family of natural products. It exists in a (1R, 2S, 5R) form and a (IS, 2R, 5S) form. Are
    11·1 answer
  • In a process called photosynthesis, plants use carbon dioxide and water, along with energy from sunlight, to produce sugar and o
    7·1 answer
  • How do solve for #13?What is the boiling point of a solution made by dissolving 1.0000 mole of sucrose in 1.0000 kg of water?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!