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
Charra [1.4K]
2 years ago
7

Q 9 The table lists the steps to clean water for drinking purpose. 1. Adding chlorine tablets to the water.2. Pouring the water

through the candle filter 3. freezing the water 4. Reusing the water in multiple household activities Which set of steps would help to provide water fit for drinking?
(a) 1 and 2
(b) 2 and 3
(c) 3 and 4
(d) 4 and 1
Chemistry
1 answer:
love history [14]2 years ago
8 0

Answer:

1 and 2

Explanation:

when we r adding chlorine to water

the water is clean

You might be interested in
A boy found a solid metal box in his backyard. The box had been buried for so long, it was difficult to determine from what the
Alex777 [14]

Answer:

Box is made up of <em>copper</em>, because density is <em>8.96  g/cm³.</em>

Explanation:

Given data:

Volume of box = 17.63 cm³

Mass of box = 158 g

Which metal box is this = ?

Solution:

First we will calculate the density of box then we will compare it with the density value of given metals.

d = m/v

d = 158 g/ 17.63 cm³

d = 8.96  g/cm³

The calculated density is similar to the given density value of copper thus box is made up of copper.

4 0
3 years ago
2. What is the current running through a toaster if the resistance is 15
pogonyaev
I’ll help you 8n a bit
8 0
2 years ago
Which process is endothermic?a)b)c)d)The evaporation of water from the skin.The burning of candle wax.The oxidation of iron in a
BlackZzzverrR [31]

Answer:

The answer is option a. The evaporation of water from the skin

Explanation:

An endothermic reaction is any synthetic reaction that retains heat from its environment. The ingested energy gives the enactment energy to the reaction to happen.

No new bonds formed, no bonds broken in this example. water molecules go from liquid to vapour (gas ), intermolecular bond exist between polar (-OH) molecules and energy is required to break these bonds during the change from liquid to gas. So, it is endothermic .

Remaining three above examples are exothermic. combustion of gas releases energy(exothermic). burninig of the candle exothermic because the energy released from the oxygen into carbon dioxide and water.oxidation of iron also exothermic

6 0
3 years ago
After precipitation falls, the water moves into the lithosphere through
Pie

After precipitation falls, the water moves into the lithosphere through openings in the rock or soil. This process is called percolation.

Therefore, Option C is the correct option.

<h3>What is Evaporation? </h3>

Evaporation is defined as the process of conversion of liquid into vapours.

For example: Conversation of water into water vapours.

But int he question, there is no conversion. So this option is incorrect option.

<h3>What is Sublimation?</h3>

Sublimation is the process of conversion of solid directly into the vapour phase

Since, there is no conversion of of solid into vapours. So, this option also incorrect option.

<h3>What is Mineralization? </h3>

Mineralization is defined as the process through which chemicals which is present in organic matter are decomposed or oxidized easily in the available forms to plants.

As there is no decomposition of minerals. So, this is also incorrect option.

<h3>What is Percolation? </h3>

Percolation is defined as the process in which liquid slowly allow to pass through a filter.

So, this is correct option.

Thus, we concluded that the water moves into the lithosphere through openings in the rock or soil. This process is called percolation.

learn more about Sublimation:

brainly.com/question/11044849

#SPJ9

7 0
1 year ago
what are two ways the study of fossils helps add to our understanding of the changes in Earth's environments?
dybincka [34]
They help us understand the concept of evolution and they help us understand what our earth was like before and after pangea or the great continental drift
5 0
3 years ago
Other questions:
  • Which statement accurately describes dark matter?
    14·2 answers
  • What is the main intermolecular force in H2CO?
    12·1 answer
  • What is the mass in grams of 9.76 x 10 12 atoms of naturally occurring sodium?
    12·1 answer
  • PLEASE HELP I'M STUCK
    9·2 answers
  • A substance produced by some insects that was used to make records before world war II
    5·1 answer
  • Match the appropriate name for each chemical reaction description provided.
    6·2 answers
  • Equal masses of 3 ideal gases x, y, z are mixed in a sealed rigid container. If the temperature of the system remains constant,
    8·1 answer
  • The law of conversation of mass states that the mass of the reactant is ___ the mass of products
    8·1 answer
  • ___ ___ ___ ___ ___ P ___ ___ ___ ___ ___ ___ ___ mediums allow light to pass through
    5·1 answer
  • If the pH of vinegar is 3.0, what is the concentration of H+ in vinegar?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!