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
Agata [3.3K]
2 years ago
5

What is landform? please help

Chemistry
2 answers:
Artist 52 [7]2 years ago
4 0

Answer:

a natural feature of the earth's surface.

Explanation:

KATRIN_1 [288]2 years ago
3 0

Answer:

A landform is a natural or artificial feature of the solid surface of the Earth or other planetary body.

Explanation:

For example, valleys, plateaus, mountains, plains, hills etc.

You might be interested in
In terms of electrons, what is the difference between a covalent and ionic bond
kramer

Answer:

An ionic bond essentially donates an electron to the other atom participating in the bond, while electrons in a covalent bond are shared equally between the atoms. Ionic bonds form between a metal and a nonmetal. Covalent bonds form between two nonmetals

7 0
3 years ago
What is the pH of a solution that is 0.40 M NaBrO and 0.50 M HBrO (hypobromous acid) (Ka for HBrO = 2.3 x 10^-9)
Pie

Answer

pH=8.5414

Procedure

The Henderson–Hasselbalch equation relates the pH of a chemical solution of a weak acid to the numerical value of the acid dissociation constant, Kₐ. In this equation, [HA] and [A⁻] refer to the equilibrium concentrations of the conjugate acid-base pair used to create the buffer solution.

pH = pKa + log₁₀ ([A⁻] / [HA])

Where

pH = acidity of a buffer solution

pKa = negative logarithm of Ka

Ka =acid disassociation constant

[HA]= concentration of an acid

[A⁻]= concentration of conjugate base

First, calculate the pKa

pKa=-log₁₀(Ka)= 8.6383

Then use the equation to get the pH (in this case the acid is HBrO)

pH=8.6383+\log_{10}(\frac{0.40\text{ M}}{0.50\text{ M}})=8.5414

8 0
1 year ago
Help me with this question please.
Salsk061 [2.6K]

Explanation:

current =  \frac{voltage}{resistance}  \\ i = \frac{v}{ohm}  \\  i  = \frac{240}{38}  \\ i = 6.3158 \: amps

hope it helped

pls mark BRAINLIEST

thanks

8 0
3 years ago
Which element would be the most reactive with K? Br, Na, Ar, or O? And how do you know?
kykrilka [37]
Ar I did this I think i got it right on edunuty
5 0
3 years ago
How many grams of aluminum are required to react with 35 mL of 2.0 M hydrochloric acid, HCl?__ HCl + __ Al --> __ AlCl3 + __
kiruha [24]

Answer:

0.6258 g

Explanation:

To determine the number grams of aluminum in the above reaction;

  • determine the number of moles of HCl
  • determine the mole ratio,
  • use the mole ratio to calculate the number of moles of aluminum.
  • use RFM of Aluminum to determine the grams required.

<u>Moles </u><u>of </u><u>HCl</u>

35 mL of 2.0 M HCl

2 moles of HCl is contained in 1000 mL

x moles of HCl is contained in 35 mL

x \: mol \:  =  \:  \frac{2 \:  \times  \: 35}{1000}  \\  = 0.07 \: moles \:

We have 0.07 moles of HCl.

<u>Mole </u><u>ratio</u>

  • Balanced equation

6HCl(aq) + 2Al(s) --> 2AlCl3(aq) + 3H2(g)

Hence mole ratio = 6 : 2 (HCl : Al

  • but moles of HCl is 0.07, therefore the moles of Al;

=  \frac{2}{6}  \times 0.07 \\  \:  = 0.0233333 \: moles

Therefore we have 0.0233333 moles of aluminum.

<u>Grams of </u><u>Aluminum</u>

We use the formula;

grams \:  = moles \:  \times  \: rfm

The RFM (Relative formula mass) of aluminum is 26.982g/mol.

Substitute values into the formula;

= 0.0233333 \: moles  \:  \times  \: 26.982 \:  \frac{g}{mol}  \\  = 0.625799 \: grams

The number of grams of aluminum required to react with HCl is 0.6258 g.

3 0
2 years ago
Other questions:
  • Draw a sketch of a cross section of a graduated cylinder illustrating the proper method for reading the volume
    9·1 answer
  • How may moles are in 145.54 g of SIO2
    14·1 answer
  • The thermochemical equation for the reaction in which calcium carbonate breaks down is shown below. how can the reaction be desc
    13·1 answer
  • HELP FAST PLZ!!!!
    13·1 answer
  • What is the total number of electron pairs shared between the two atoms in an 02 molecule
    13·1 answer
  • Aspartame, phenylalanine, and aspartic acid were examined by thin‑layer chromatography (TLC) using ninhydrin as the visualizatio
    6·1 answer
  • Please help !!!!!!!!!!!!
    10·1 answer
  • The chemical process in which small organic molecules called monomers bond together to form a chain is called A) production B) p
    14·1 answer
  • At the end we stopped the distillation with some material left in the vial. Why is it considered unsafe to distill until dryness
    8·1 answer
  • Someone pls help me I will mark you as brain
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!