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
Effectus [21]
3 years ago
5

Use the drop-down menus to complete the statements.

Chemistry
2 answers:
GrogVix [38]3 years ago
8 0

Answer: Leeches, Earthworms, Marine worms

Explanation:

Cerrena [4.2K]3 years ago
4 0
What grade is this fora.
You might be interested in
The reaction in Fe + O2→Fe2O3 is an example of a(n): A. combination reaction. B. decomposition reaction. C. aqueous reaction. D.
motikmotik
This is a combination reaction because two molecules becomes one

A + B ---> AB
8 0
3 years ago
What else can copper react with?
FinnZ [79.3K]

Answer:

copper

Explanation:

.

7 0
2 years ago
Read 2 more answers
A 40.0 mL sample of 0.18 M HCI is titrated with 0.36 M CoHsNH2. Dctermine the pH at these points: At the beginning (before base
Whitepunk [10]

Answer:

at the beginning:

pH = 0.745

Explanation:

HCl is a strong acid, so:

  • HCl + H2O  → H3O+  +  Cl-

       0.18 M             0.18        0.18.....equilibrium

before base is added:

∴ [ H3O+ ] ≅ <em>C </em>HCl = 0.18 M

⇒ pH = - Log [ H3O+ ] = - Log ( 0.18 )

⇒ pH = 0.745

8 0
3 years ago
What is an example of entropy from everyday life?
Deffense [45]
A Campfire is an example, the solid wood becomes ash.
8 0
3 years ago
In the reaction N2 + 3H2 → 2NH3, what is the mole ratio of hydrogen to nitrogen?
uranmaximum [27]

Answer: The mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

Explanation:

•Mole ratios are determined using the coefficients of the substances in the balanced chemical equation. •Each coefficient represents the number of mole of each substance in the chemical reaction.

•The mole ratio can be determined by first writing out a balanced chemical equation for the reaction.

For this reaction the balanced chemical equation is

N2(g) + 3H2(g) ----> 2NH3(g)

1mol:3mol : 2mol

From the equation we can see that 1 mole of N2(g) reacts with 3 moles of H2(g) or 3 moles of H2(g) react with 1 mole of N2(g) to produce 2 moles of NH3(g).

Therefore, the mole ratio of hydrogen to nitrogen is 3 mole: 1 mole, 3:1

7 0
3 years ago
Other questions:
  • Why do atoms of elements take part in chemical reaction?​
    15·1 answer
  • The electron cloud is the predicted location for
    9·1 answer
  • Define what chemical and radiant energy is
    12·1 answer
  • Did an oxidation-reduction reaction occur in the reaction between copper sulfate and sodium sulfide?
    14·2 answers
  • Determine if the following compounds are likely to have ionic or covalent bonds. a. Magnesium oxide (MgO) _______________ b. Str
    5·1 answer
  • What happens in a subduction zone?
    12·1 answer
  • ASAP will get Brainiest<br> question in pic ( multiple select )
    5·2 answers
  • Identify the chemical reactions as endothermic, exothermic, or neither
    13·2 answers
  • Lime is used in farming to reduce the acidity of the soil. The chemical name for lime is calcium oxide. When the water in the so
    14·1 answer
  • Why might genetically identical twins have different phenotype
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!