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
notsponge [240]
2 years ago
15

Which is an element? A: H20 B: NaCl C: Mg D: CO

Chemistry
2 answers:
xz_007 [3.2K]2 years ago
4 0
D is the answer. The others are compounds not single elements
Talja [164]2 years ago
3 0
The answer is option D "CO." Co also known as Cobalt is the 27th element on the periotic table. It was discovered in <span>1735, it's boiling point is 3200 k.</span>

Atomic mass: 58.9332
Protons: 27
Neutrons: 32
Electrons: 27

Hope this helps!

You might be interested in
PLS HELP ASAP!! Why is titanium known as a strategic metal??
Rom4ik [11]

__________________________________________________

Titanium is known as a strategic metal because it is one of the most abundant items on Earth! Also, it is used to build structures, such as space crafts, aircrafts, etc.

__________________________________________________

Hope this helps!

7 0
3 years ago
Maria wants to determine which type of disinfectant kills the most bacteria.
murzikaleks [220]

Answer:

well she can test both of the soap by putting one on and plate and another on the other plate and which ever is cleaner is your answer

6 0
3 years ago
Read 2 more answers
In the Atomium building, what do the tubes represent?
Monica [59]

Answer:

74 = celcus

Explanation:

7 0
2 years ago
When iocnic solids dissolve in water, the break down into the ____ ions (cations) and ___ ions (anions) that they contain?
ddd [48]
What are the answers

8 0
3 years ago
Each incomplete reaction is a neutralization reaction. Match each equation with the salt formed. 1. H2SO4 + 2NH4OH → ? 2. 2NaOH
sergey [27]

1. H₂SO₄ + 2NH₄OH ⟶ (NH₄)₂SO₄ + 2H₂O


2. 2NaOH + H₂CO₃ ⟶ Na₂CO₃ + 2H₂O


3. HNO₃ + KOH ⟶ KNO₃ + H₂O


<em>Explanation</em>:

Acid + base ⟶ salt + water


Take the H from the acid and the OH from the base to get water.


Then, join what’s left to get the salt. Write the symbol for the metal first.


For example, in equation 3, take the H from HNO₃ and the OH from KOH.


Combining the remaining parts (NO₃ and K) to get the salt, KNO₃.


7 0
3 years ago
Read 2 more answers
Other questions:
  • Which are forms of frozen water? Check all that apply. dew frost hail rain sleet
    6·2 answers
  • Ethan is investigating a snails response to stimuli. He put the following substances on each corner of a paper towel; syrup,lemo
    5·2 answers
  • How explain two ways to decrease the energy of a wave
    9·1 answer
  • What element has the electron configuration 1s2 2s2 2p6 3s2 3p1?
    15·1 answer
  • Is waterproof sunscreen polar or non-polar
    11·2 answers
  • How many significant figures in 4300 ?
    8·1 answer
  • A solution contains 10.20 g of unknown compound (non-electrolyte) dissolved in 50.0 mL of water. (Assume a density of 1.00 g/mL
    7·1 answer
  • Use dimensional analysis to solve the following problems. Pay attention to correct use of units and correct use of significant f
    13·2 answers
  • NUMBERS 6-8 URGENT PLEASE
    13·1 answer
  • The rock outcrop, shown above demonstrates the law of included fragments. Identify the correct definition for the law of include
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!