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
Paraphin [41]
3 years ago
9

Which statement describes this reaction?

Chemistry
1 answer:
slamgirl [31]3 years ago
5 0
I’m not forsure but I’m thinking it’s c sorry if I’m wrong
You might be interested in
Calculate the speed of sound wave with a frequency of 20hz and a wave length of 3.00m
Marta_Voda [28]
Wavelength is the distance of one frequency wave peak to the other and is most commonly associated with the electromagnetic spectrum.[1] Calculating wavelength is dependent upon the information you are given. If you know the speed and frequency of the wave, you can use the basic formula for wavelength. If you want to determine the wavelength of light given the specific energy of a photon, you would use the energy equation. Calculating wavelength is easy as long as you know the correct equation.
7 0
3 years ago
There is a 30g of be-11 it has a half-life of about 14 seconds how much will be left in 28 seconds
Lelu [443]

There will be 7.5 g of Be-11 remaining after 28 s.

If 14 s = 1 half-life, 28 s = 2 half-lives.

After the first half-life, ½ of the Be-11 (15 g) will disappear, and 15 g will remain.

After the second half-life, ½ of the 15 g (7.5 g) will disappear, and 7.5 g will remain.

In symbols,

<em>N</em> = <em>N</em>₀(½)^<em>n</em>

where

<em>n</em> = the number of half-lives

<em>N</em>₀ = the original amount

<em>N</em> = the amount remaining after <em>n</em> half-lives

6 0
3 years ago
Which organisms in this food web are carnivores? Select the two correct
LUCKY_DIMON [66]

The two correct options are Poison dart frog and Boa constrictor. Both these organisms are pure carnivores which are also known as pure meat eaters in the food web. Carnivores are organisms in the food chain that only meat-eaters and never take any type of vegetation in their diet.

Explanation:

  • A Poison dart frog purely survives on meat (meat- eater).
  • Long sticky tongues are used to catch their prey such as ants, flies, insects.
  • Since they produce high toxin levels, it has very few predators in the wild.
  • Boa constrictor is also an organism that eats only meat.
  • While they are young they eat prey like rats, squirrels and mice.
  • The type of attack used by a boa constrictor is an ambush attack type. It attacks its preys using the surprise factor.

6 0
3 years ago
What do you mean by atomic number? ​
Allushta [10]

Answer:

Atomic number is the number of protons in an isotope or element.

Explanation: The atomic number is the same number of protons in an element or isotope and if said isotope is neutral than it is the same number of electrons.

Example: Atomic number = 19 Protons = 19 if neutral Electrons = 19

4 0
3 years ago
Find the precent composititions in (NH4)2S
ruslelena [56]
Ammonium sulfide
68,154 g/mol
41.10 percent nitrogen, 11.83 percent hydrogen, and 47.04 percent sulfur.
8 0
3 years ago
Other questions:
  • In ionic bonds the atom that contributes an electron and has a positive charge as a result is called the . The atom in ionic bon
    8·1 answer
  • What is 3200000 in scientific notation?
    9·2 answers
  • Properties of substances can be classified as physical or chemical properties. Which statements describe chemical properties? (C
    8·1 answer
  • When 2.35 g of potassium reacts with excess water, what mass of hydrogen gas is formed?
    14·1 answer
  • Mya is playing the guitar she strums the strings and the guitar produces noise. Mya is transforming
    10·1 answer
  • Which of the following CANNOT be determined by looking at the spectra of a star? *
    6·1 answer
  • HELP!!! name two properties of metals
    6·1 answer
  • The group of elements that make up the smallest percentage of the periodic table are the
    14·1 answer
  • How many grams are in 3.45 moles CO2
    14·1 answer
  • Select the correct answer. which tool is used to measure an object’s mass? a. graduated cylinder b. meter stick c. digital therm
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!