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
agasfer [191]
3 years ago
15

Do only chemical reactions get colder/hotter?

Chemistry
1 answer:
qwelly [4]3 years ago
8 0
I did it for you I was at my moms and my dad and my mom and I were talking to
You might be interested in
What is a scientific explanation for a range of hypotheses and observations supported by testing
worty [1.4K]
<span>It verifies the significant relationships of the observed and hypothesized variables in the study.

Furthermore, the authors utilize and make use of the scientific method in order to have clear basis and evidence for their investigations. Research method is always used to answer every scientific inquiry and in gaining evidential data or knowledge. The scientific method has the following process or at least undergoes the process of
1. Observation</span> 
2. Hypothesis 
3. Experimentation 
4. Interpretation of data 
5. Evaluating the data 
6. Passing and recording the data 

<span>These steps are crucial and the empirical data that these scientists obtain are very important to keep that is why research paper, thesis and dissertations exists.<span>
</span></span>
8 0
3 years ago
375 mL of a 0.88 M potassium hydroxide solution is added to 496 mL of a 0.76 M cesium hydroxide solution. Calculate the pOH of t
AysviL [449]

Answer:

pOH of resulting solution is 0.086

Explanation:

KOH and CsOH are monoacidic strong base

Number of moles of OH^{-} in 375 mL of 0.88 M of KOH = \frac{0.88\times 375}{1000}moles = 0.33 moles

Number of moles of OH^{-} in 496 mL of 0.76 M of CsOH = \frac{0.76\times 496}{1000}moles = 0.38 moles

Total volume of mixture = (375 + 496) mL = 871 mL

Total number of moles of OH^{-} in mixture = (0.33 + 0.38) moles = 0.71 moles

So, concentration of OH^{-} in mixture, [OH^{-}] = \frac{0.71}{871}\times 1000M=0.82M

Hence, pOH=-log[OH^{-}]=-log(0.82)=0.086

8 0
3 years ago
Water _____.
Sergio039 [100]

Answer: is neither an acid nor a base

Explanation: Water is a universal solvent which means it can dissolve most of the substances in it.

Water has high thermal heat capacity , which means large heat is required to heat the water.

Water is not always pure as it gets contaminated by various pollutants present in the atmosphere such as gases, bacteria and suspended matter.

Water is an amphoteric substance which can act as both acid and base, thus can donate and acept [texH^+[/tex] ions.Thus it is neither an acid nor a base.

HCl+H_2O\rightarrow H_3O^++Cl^-

Here water is accepting a proton, thus it acts as base.

NH_3+H_2O\rightarrow NH_4^++OH^-

Here water is donating a proton, thus it acts as acid.




4 0
3 years ago
Arrange the following elements in order of increasing ionization energy
Gnoma [55]

Ionization Trend: First ionization energy will increase left to right across a period and increase bottom to top of a family (column).

A) Sr, Be, Mg are all in column 2 of the periodic table. Based on the first ionization rule above, from increasing to decreasing energy, the order is: Be, Mg, Sr

B) Bi, Cs, Ba are all in the same row of the periodic table. Based on the first ionization rule above, from increasing to decreasing energy, the order is: Bi, Ba, Cs

C) Same rule as above. Order is: Na, Al, S

8 0
3 years ago
An ion always has a ________ or ________ charge. While a covalent bond always has no _________, meaning it is __________.
almond37 [142]
An ion has a positive or negative charge. While a covalent bond always has no charge, meaning it is neutral. 
5 0
3 years ago
Other questions:
  • Which of the following contribute to acid rain
    14·1 answer
  • Which of the following is the correct formula for nitrous acid? a) HNO b) HN2O c) N2O d) HNO2 e) HNO3
    9·1 answer
  • Solution of Na2SO4 is <br> A) acidic B) basic C neutral
    14·1 answer
  • Please help me !!!!
    11·1 answer
  • If a piece of marble has the mass of 132.796 g and the volume of 26.9 cm
    7·2 answers
  • Is a instant cold pack Endothermic or Exothermic reaction? Explain.
    14·1 answer
  • For the reaction between ammonium phosphate and lead (IV) nitrate, producing ammonium nitrate and lead (IV) phosphate, how many
    14·1 answer
  • Giving brainiest i need help with number 3
    15·1 answer
  • Which phrase best describes nuclear fusion? ( 1 point)
    8·1 answer
  • Which word equation shows lithium oxide being formed from the reaction between oxygen and lithium? oxygen lithium oxide right ar
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!