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
balu736 [363]
3 years ago
15

Why do people put rain gutters on the edges of the roofs of their homes?

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0
This is so the rain drains off and dosent cause run off
lorasvet [3.4K]3 years ago
5 0
So that rain water can be directed to a drain rather than build up causing possible floods
You might be interested in
The two systems that control your body functions are the
KatRina [158]
c) nervous and endocrine system

Hope I helped! ( Smiles )
5 0
3 years ago
How many moles of lithium metal would need to react with excess oxygen gas to produce 4 moles of lithium oxide in the following
Oduvanchick [21]
4Li + O₂ = 2Li₂O

Li : Li₂O = 4 : 2 = 2 : 1

2 : 1
x : 4

x=4*2/1=8 mol

D) 8
6 0
3 years ago
Read 2 more answers
A flask containing 855 grams of water was heated. If the temperature of the water was raised from 21.0 to 85.0 degrees Celsius,
marin [14]

Answer:

The heat absorbed by the water is 228,948.48 J

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system.

In this way, between heat and temperature there is a direct proportional relationship (Two magnitudes are directly proportional when there is a constant so that when one of the magnitudes increases, the other also decreases; and the same happens when either of the two decreases .). The constant of proportionality depends on the substance that constitutes the body and its mass, and is the product of the specific heat and the mass of the body. So, the equation that allows to calculate heat exchanges is:

Q = c * m * ΔT

where Q is the heat exchanged by a body of mass m, constituted by a substance of specific heat c and where ΔT is the variation in temperature.

In this case:

  • c= 4.184 \frac{J}{g*C}
  • m=855 g
  • ΔT= Tfinal - Tinitial= 85 °C - 21°C= 64 °C

Replacing:

Q= 4.184 \frac{J}{g*C} *855 g* 64 C

Solving:

Q= 228,948.48 J

<u><em>The heat absorbed by the water is 228,948.48 J</em></u>

6 0
3 years ago
Please answer correctly !!!!!!!!!!!!! Will mark brainliest !!!!!!!!!!!!!!!!!!!!
igomit [66]

Answer:

it is a

Explanation:

8 0
3 years ago
Read 2 more answers
I don’t need the answers to this but u can if u want but I’m just asking what is this is asking for and how to solve it? I hope
strojnjashka [21]

Answer:

See explanation

Explanation:

Salts are produced from the reaction of an acid and a base. In general ...

Acid + Base => Salt + Weak Electrolyte

Acids from the 'Arrhenius Definition' contain an 'ionizable' hydrogen (-H). Such as, HCl, HBr, HI, HNO₃, HClO₄, HF, etc.

Bases from the 'Arrhenius Definition' contain an 'ionizable' hydroxide (-OH). Such as, LiOH, NaOH, KOH, CsOH, Ca(OH)₂, etc.

When the acid and base react, they proceed by what is known as a 'Double Replacement Reaction' or 'Metathesis Reaction'. In the process, the ions of the reactant compounds exchange positions such that a 'Driving Force' compound is formed on the product side. The Driving Force compound is <u>always</u> on the product side of the equation and is a compound that takes one of three forms => A precipitating salt, a compound of a weak acid or weak base (weaker than the starting acid or base) or gas decomposition product (~ vinegar + backing soda rxn => CO₂ gas).

For your problem, split the compound into cations and anions. You can usually tell which is which by using this format on formulas like those listed in your question => reading formula from left to right, place an imaginary line after the 1st metal => this metal will be the cation & the remaining formula will be the anion.

KBr => K | Br => K (Potassium) is the cation (K⁺) and Br (Bromide) is the anion (Br⁻)

KBr => K⁺ + Br⁻

Now. Apply this rule => Add 'H' to anion => HBr,  then add 'OH' to cation => KOH.

HBr is the acid and KOH is the base. Therefore ...        

Acid + Base => Salt + Wk Electrolyte

HBr + KOH => KBr + H₂O (note how ions of reactants exchange places to form products).

So, KBr comes from the reaction of acid HBr and base KOH.

HBr + KOH => KBr + H₂O

To determine the acid and base origins of LiCl and NaF, use the same logic. Hope this helps. Doc :-)

7 0
3 years ago
Other questions:
  • When scientists looked at the polarity of bands of rock on either side of the mid-ocean ridges, what did they find? A. that ther
    15·2 answers
  • Sodium metal is quiet soft whereas sodium chloride crystals are quiet hard explain why
    10·1 answer
  • What is the volume of 2.1 moles of chlorine gas (Cl2) at standard temperature and pressure (STP)?
    9·1 answer
  • How many pi bonds are formed when sp2 hybridization occurs in ethene, C2H4?
    9·1 answer
  • You are making a map of your state in your map scale 1 cm equals 10 km if two cities are 200 km apart how many centimeters apart
    13·1 answer
  • 20 POINTS PLZ ANSWER FAST !!!!!!!!!!!!!!!!!!
    7·1 answer
  • A 187.4g sample of C3H5(NO3)3 decomposes to produce carbon dioxide, water, diatomic oxygen, and diatomic nitrogen.
    15·1 answer
  • Complete the following equations (note that the equations are not balanced). Use the activity series if necessary. Li &gt;&gt;Ba
    7·2 answers
  • Which model represents an element? O A. OB. O c. O D.​
    8·1 answer
  • In an atom the number of protons must be equal of
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!