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
Carbon dioxide in the atmosphere can be reduced by _.*​
pychu [463]

Answer:

As the use of plants as carbon sinks can be undone by events such as wildfires, the long-term reliability of these approaches has been questioned. Carbon dioxide that has been removed from the atmosphere can also be stored in the Earth's crust by injecting it into the subsurface, or in the form of insoluble carbonate salts (mineral sequestration).

HOPE IT HELPS

TAKE CARE

Explanation:

6 0
2 years ago
Read 2 more answers
What are the elements CO2 and PU
s344n2d4d5 [400]
CO2 is Carbon Dioxide and PU is Plutonium
3 0
3 years ago
Read 2 more answers
1.) What are the chemical properties of matter?
denis23 [38]

Answer:

Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. Reactivity is the ability of matter to react chemically with other substances.

Explanation:

Your cute btw :)

3 0
3 years ago
given the following reaction: CuO (s) + H2 (g) to Cu(s) + H2O (g). If 250 L of hydrogen gas are used to reduce copper (II) oxide
QveST [7]

24g is needed no explanation

4 0
3 years ago
The hot dogs you ate at the barbecue last week were 75% fat-free by weight, had 275 calories, and weighed 110 g. a) What percent
vovangra [49]

Answer:

a) 25%

b) 27.5 g

c) 90%

Explanation:

a) 75% fat-free by weight means 25% of the weight is made by fat.

b) 110 g ___ 100%

      x    ___ 25%

          x = 27.5g

Each hot dog has 27.5g of fat.

c) 9 cal ___ 1 g fat

      y    ___ 27.5 g fat

          y = 247.5 cal

275 cal ___ 100%

247.5 cal ___ z

     z = 90%

90 % of the calories come from fat.

6 0
3 years ago
Other questions:
  • How many atoms of lead are in 3.5 moles of lead?
    7·1 answer
  • Electrons in __________ bonds remain localized between two atoms. electrons in __________ bonds can become delocalized between m
    9·1 answer
  • The best way to explain the relationships in a nuclear reaction is by using:
    6·1 answer
  • The boiling point of isopropyl alcohol is 80.3°C. What state of matter is isopropyl alcohol in at 99°C?
    9·1 answer
  • You have a 2 Liter solution that contains 1 mole of NaCI. What is the molarity of the solution?
    15·1 answer
  • What is water (H2O)? Select all that apply * an element a molecule 1 hydrogen and 2 oxygen 2 hydrogen and 1 oxygen
    7·1 answer
  • What is the mass of a titanium alloy that has a heat of fusion of 422.5 joules/gram and requires 2.960 joules of energy to melt
    6·1 answer
  • Why are K3[Cr(C2O4)3].3H2O, K2[Cu(C2O4)2].2H2O and K3[Fe(C2O4)3].3H2O coloured, whereas K3[Al(C2O4)3.3H2O is colourless? ​
    12·1 answer
  • Difference between atom and ion <br>plz plz answer ​
    8·2 answers
  • How is a gas affected when pressure temperature or volume change
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!