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
vlabodo [156]
3 years ago
7

20 POINTS PLZ ANSWER FAST !!!!!!!!!!!!!!!!!!

Chemistry
1 answer:
IgorC [24]3 years ago
5 0

Answer: Ring- tailed opossums

Explanation:

You might be interested in
Suppose 180 ml of 3.52x10^-4 M NaOH is mixed with 220 mL of 2.47x10^-4 M MgCl2.
velikii [3]
When in water, MgCl2 dissociates into magnesium ions and Cl- ions and NaOH into Na and OH ions. The equation is as follows:

MgCl2 = Mg2+ + 2Cl-
NaOH = Na+ + OH-

The initial concentrations are as follows:

[Mg2+] = .220(<span> 2.47x10^-4) / .220+.180 = 1.36x10^-4 M Mg2+
</span>[OH-] = .180 (3.52x10^-4) / .220+.180 = 1.58x10^-4 M OH-
6 0
3 years ago
!!!!HURRY!!!! What reaction is endothermic?
Alex

Answer:

The reaction in which heat is absorbed from the surrounding is called endothermic reaction.

so

I think it's answer is 2nd option.

4 0
3 years ago
Un anillo, de masa 90 gramos, contiene 59,1% de oro. ¿Cuál es el valor del anillo si cada mol de oro vale S/.1800?. Considere el
LekaFEV [45]

Answer:

S/.486 es el valor del anillo

Explanation:

Para hallar el precio del anillo se deben encontrar las moles de oro que contiene este.

Si el anillo es de 90g y solo el 59.1% contiene oro, la cantidad de oro en gramos es:

90g × 59.1% = 53.19g Oro en el anillo

Ahora, para convertir los gramos de oro a moles se debe usar la masa atómica del oro (197g/mol), así:

53.19g × (1mol / 197g) = <em><u>0.27 moles de oro contiene el anillo</u></em>.

Ya que cada mol de oro cuesta S/.1800, 0.27 moles de oro (Y por lo tanto, el anillo) costarán:

0.27mol × (S/.1800 / 1mol oro) =

<h3>S/.486 es el valor del anillo</h3>
8 0
3 years ago
How do you figure out how many isotopes an element has?
Helen [10]

by counting the isoto

7 0
3 years ago
Which of the following choices will an atom of sulfur (S) be most likely to bond with?
Marrrta [24]
C. 2 hydrogen (H) atoms because in bonding with them sulfur will get a full valence shell and hydrogen will have a full valence shell.
7 0
3 years ago
Read 2 more answers
Other questions:
  • Scientists have changed the model of the atom as they have gathered new evidence. One of the atomic models is shown below. A pur
    15·1 answer
  • The element nitrogen has an atomic weight of 14.0 and consists of two stable isotopes nitrogen-14 and nitrogen-15. The isotope n
    12·1 answer
  • Calculate the number of grams of C2H6 in 4.6 miles of C2H6
    10·1 answer
  • Find the density of a sample with a mass of 2.56 g and a volume of
    13·1 answer
  • An element is an arrangement of atoms in a particular way; True or False?
    5·1 answer
  • What would I write in the results, conclusion, and keywords and research components for my 4th grade son's Science Fair Project?
    9·1 answer
  • Please enter the values you calculated for each of your three trials for the molarity of your NaOH solution. Place your molarity
    13·1 answer
  • How many grams of water are produced if we react 3 moles of hydrogen with 3 moles of oxygen?
    7·1 answer
  • Why don't elements in a group have consicutive atomic numbers?​
    9·2 answers
  • The balls in a modeling kit representing different elements are often distinguished by color. however, there are other ways to i
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!