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
sergij07 [2.7K]
3 years ago
9

1.15 g of a metallic element reacts with 300 cm3 of oxygen at 298 K and 1 atm pressure, to form. an oxide which contains O2– ion

s. What could be the identity of the metal? A calcium. B magnesium. C potassium. D sodium
Chemistry
1 answer:
Deffense [45]3 years ago
5 0
D sodium
hope it helps
You might be interested in
If i add water to 100 mL of a 0.15M NaOH solution until the final volume 150mL , what will the molarity of the diluted solution
labwork [276]
0,15 moles of NaOH-------in------------1000ml
x moles of NaOH------------in--------100ml
x = 0,015 moles of NaOH

final volume = 150ml

0,015 moles of NaOH---in-------150ml
x moles of NaOH--------------in-----1000ml
x = 0,1 moles of NaOH

answer:  0,1mol/dm³  (molarity)
3 0
3 years ago
A piece of string is found to be 35.9 meters long. How long is the string in inches?
Nady [450]

Answer: 1413.39 inches

Explanation:

<u>Formula for converting meters to inches</u>

Meters x 39.37 (roughly) = Value in inches

<u>Applying formula</u>

35.9 meters x 39.37 = 1413.39 inches (roughly)

3 0
1 year ago
The elements helium, neon, and xenon are all part of the same ______ on a periodic table.
OLga [1]
I think the answer would be b
5 0
2 years ago
Read 2 more answers
How does heat conduction work in the metal brownie pan?
34kurt
The metal conducts the heat and through conduction, cooks the brownies; conduction also cooks the brownies in the glass pan, but since infrared goes right through the glass, they also cook by radiation.
7 0
3 years ago
Naoki's bicycle has a mass of 10 kg. If Naoki sits on her bicycle and starts pedaling with a force of 168 N, causing an accelera
White raven [17]

Answer:

50 kg

Explanation:

Data:

Mass of bicycle = 10 kg

                       F = 168 N

                       a = 2.8 m/s²

Calculation:

                     F = ma     Divide each side by m, Then

                 m = F/a

                     = 168/2.8

                      = 60 kg

                 m = mass of bicycle + Naoki's mass. Then

                60 = 10 + Naoki's mass     Subtract 10 from each side

Naoki's mass = 50 kg

3 0
3 years ago
Other questions:
  • What is essential to living things because many of the chemical reactions that occur in living things require it?
    6·2 answers
  • You can determine the concentration of acids or bases in a solution by using___________.
    10·1 answer
  • Why do we have robots?
    8·2 answers
  • Catie set a glass of hot water and a glass of cold water on the kitchen table and let them sit for one hour. How will the partic
    7·1 answer
  • What happens to water particles at boiling point
    8·2 answers
  • What is Keystone XL pipeline?
    7·1 answer
  • Please help me out! :))
    12·1 answer
  • 19.The Alkali and Alkaline Earth metals belong to which columns, respectively?
    7·1 answer
  • What are fossil fuels made from?
    11·2 answers
  • Look at the two question marks between zinc (zn) and arsenic (as). at the time, no elements were known with atomic weights betwe
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!