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
vredina [299]
3 years ago
9

Which of the following statements is true?

Chemistry
2 answers:
hammer [34]3 years ago
8 0

Lord dragon you are wrong.

The answer is A: Incandescent light bulbs are almost 100 percent efficient. Because b-d do not make any sense.

artcher [175]3 years ago
8 0

Answer:

a

Explanation:

You might be interested in
What are the oxides of oxygen​
galina1969 [7]

Answer:

Oxides are chemical compounds with one or more oxygen atoms combined with another element (e.g. Li2O). Oxides are binary compounds of oxygen with another element, e.g., CO2, SO2, CaO, CO, ZnO, BaO2, H2O, etc. These are termed as oxides because here, oxygen is in combination with only one element.

Explanation:

6 0
3 years ago
Read 2 more answers
Morphine is a well known pain killer but is highly addictive. The lethal dose of morphine varies from person to person based on
Aliun [14]

Answer:

0.252 milimoles

Explanation:

To convert mass of a substance to moles it is necessary to use the molar mass of the substance.

The formula of morphine is C₁₇H₁₉NO₃, thus, its molar mass is:

C: 17*12.01g/mol = 204.17g/mol

H: 19*1.01g/mol = 19.19g/mol

N: 1*14g/mol = 14g/mol

O: 3*16g/mol = 48g/mol.

204.17 + 19.19 + 14 + 16 = <em>285.36g/mol</em>

Thus, moles of 71.891 mg = 0.071891g:

0.071891g × (1mol / 285.36g) = 2.5193x10⁻⁴ moles

As 1 mole = 1000 milimoles:

2.5193x10⁻⁴ moles = <em>0.252 milimoles</em>

7 0
3 years ago
Which of the following types of energy does an object have because of its position?
Maru [420]

Answer:

potential energy

Explanation:

energy which is linked with the position of the object is called as potential energy. any object possessing energy due to its position is potential energy. example is holding a basketball up in to the air at a certain height so that it will have a gravitational pull towards earth surface. this gravitation pull is called as potential energy.

8 0
3 years ago
Read 2 more answers
Please help fast
Valentin [98]

A) deposition is the processes where particles of rock or laid down in sections with heavier sediments building up first

5 0
3 years ago
Read 2 more answers
How many carbon atoms are in the smallest cyclic hydrocarbon?
SOVA2 [1]
There are 3 carbon atoms
3 0
3 years ago
Read 2 more answers
Other questions:
  • Which description below represents a hydrocarbon?
    11·1 answer
  • What is the measurement 222.008 mm rounded off to four significant digits?
    5·2 answers
  • Ethanol is used widely as a solvent in laboratories for various chemical reactions. A laboratory technician takes 50.0 mL of eth
    15·2 answers
  • At a high temperature, equal concentrations of 0.160 mol/L of H2(g) and I2(g) are initially present in a flask. The H2 and I2 re
    11·1 answer
  • The density of cadmium is 8.65 g/mL, what is the volume of a 33.4 g object made of pure cadmium?
    9·1 answer
  • Which of the following best describes solids?
    14·2 answers
  • Which of the following changes
    13·1 answer
  • Equation for the complete chemical reaction, ionic equation, ionic net equation
    12·1 answer
  • What is culture?
    9·1 answer
  • What volume of water vapor would be produced from the combustion of 815.74 grams of propane (C3H8) with 1,006.29 grams of oxygen
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!