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
Anuta_ua [19.1K]
3 years ago
9

How has Charles Darwin contributed to the study of evolution?

Chemistry
1 answer:
Lunna [17]3 years ago
6 0
Do you answer is he proposed a genetic relationship between species
You might be interested in
Calculate the heat in joules "Q" needed to raise 27.0 g of water from 10.0 °C to 90.0 °C.​
Morgarella [4.7K]

Answer:

9028.8 J

Explanation:

The equation for working out the amount of thermal energy required is q = m c Δ T , where q is the amount of energy, m is the mass being heated up in grams, c is the specific heat capacity of what you're heating up in joules per gram per kelvin, and Δ T is the change in temperature in Kelvin.(Change in temperature will always give the same value,no matter Celsius or Kelvin)

mass = 27g, assuming specific heat capacity of water is 4.18 J/g*K, and the change in temperature is 90-10(=80)  , the energy needed to raise : 80 × 27 × 4.18 = 9028.8 J

5 0
3 years ago
nasa isang grupo spreadsheet na naka save sa isang file kadalasan ito ay takdang workbook in tama mali​
lianna [129]

Explanation:

ggu7huhbbiyhjyyhvd ya

5 0
3 years ago
Chemistry- "write the products expected from each acid-base reaction shown below........
Dahasolnce [82]
1.) NaOH + HCl  →  NaCl  +  H₂O
<span>
2.) Ca(OH)</span>₂ <span> +  H</span>₂<span>SO4  </span>→<span>  CaSO</span>₄ +  2H₂O
<span>
3.) 2HCl +Ba (OH)2  </span>→ <span> BaCl</span>₂  +  2H₂O
<span>
4.) HNO3 + LiOH   </span>→  <span> LiNO</span>₃ <span> +  H</span>₂O
<span>
5.) H</span>₂CO₃ + NaOH  →  Na₂CO₃  +  H₂O
<span>
6.) KOH  +  HC</span>₂H₃O₂  →  KC₂H₃O₂  <span>+  H</span>₂O
<span>
7.) Ba(OH)2 + HNO2  </span>→<span> Ba(NO</span>₂)₂<span>  +  H</span>₂O
<span>
8.) H</span>₂<span>SO</span>₃<span> + 2NaOH  </span>→<span>  Na</span>₂SO₃  <span>+  2H</span>₂O
<span>
9.) H</span>₃<span>PO</span>₄<span> + 3KOH  </span>→<span>   K</span>₃PO₄  <span>+   3H</span>₂O 
<span>
10.) 2HBr + Ca(OH)2  </span>→<span>  CaBr</span>₂  +  2H₂O


The reason why water is so recurrent is because of the general form that says:   ACID  +  BASE  →  SALT  +  WATER

I took the liberty of balancing the equations.
8 0
4 years ago
A boat moves at a speed of 15 km/h in still water. The river it is traveling in flows at a rate of 3 km/h downstream. What is th
natulia [17]
I think its 5 I have not learned this so it is my best guess
8 0
4 years ago
A car driving at 105 km/h. what is the speed in mi/min?<br> (1 mi = 1.61 km)
DedPeter [7]

Answer:

1.087 mi/min

Explanation:

Given data:

Speed of car in Km/h = 105

Speed of car in miles/min = ?

Solution:

It is given that one miles = 1.61 Km

while it is known that one hour = 60 minutes

Thus in order to convert the km/h into mi/min we will divide the given value by 96.561.

105 / 96.561

1.087 mi/min

3 0
4 years ago
Other questions:
  • Explain the steps for naming an oxy-acid (refernce pg. 252)
    15·1 answer
  • Select the type of energy involved in each step.
    10·2 answers
  • A litter of pigs is born. Three are female and three are male. Which set of symbols correctly describes the gender of each pigle
    7·2 answers
  • a true breeding pea plant with smooth seeds is crossed with a true breeding pea plant with wrinkles if smooth seeds is a dominat
    10·1 answer
  • Which of the following contains BOTH ionic and covalent bonds? Which of the following contains BOTH ionic and covalent bonds? Ca
    7·1 answer
  • What rule is observed when naming an oxyacid that does have oxygen in its formula?
    8·2 answers
  • Según las propiedades de una sustancia: punto de fusión (PF): 0° C, punto de ebullición (PE) de 28° C. ¿Cual es el estado de agr
    13·1 answer
  • BRO PLSSSS HELP
    5·2 answers
  • Which phrase is the best description of osmosis
    8·2 answers
  • Given the reaction: 2 NO2 (g) → N2O4 (g) the rate of reaction was slow with 2.00 moles of NO2 in a 2.00 L container at 1 atm and
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!