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Andrei [34K]
3 years ago
8

5. For career day, Maria invited her uncle, an astronomer, to speak to her class about his boyhood

Chemistry
1 answer:
Sphinxa [80]3 years ago
5 0

Answer:

B. Distance from earth. I'm pretty sure. From what I learned it should be that.

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If salt is dissolved in water, water serves as the:
NemiM [27]
B. solvent 

solute is the substance being dissolved
5 0
3 years ago
Calculate the ph of the solution resulting by mixing 20.0 ml of 0.15 m hcl with 20.0 ml of 0.10 m koh
Aliun [14]

Answer:

1.60.

Explanation:

  • The no. of millimoles of HCl = MV = (0.15 M)(20.0 mL) = 3.0 mmol.
  • The no. of millimoles of KOH = MV = (0.10 M)(20.0 mL) = 2.0 mmol.

<em>Since the no. of millimoles of HCl is larger than that of KOH. The solution is acidic.</em>

<em></em>

∴ M of remaining HCl [H⁺] remaining = (NV)HCl - (NV)KOH/V total = (3.0 mmol) - (2.0 mmol) / (40.0 mL) = 0.025 M.

∵ pH = - log[H⁺]

<em>∴ pH = - log[H⁺] </em>= - log(0.025) = <em>1.602 ≅ 1.60.</em>

5 0
3 years ago
In a chemical reaction, ____ interact to form ____. select one:
QveST [7]
A. Reactants, products

In a chemical reaction, reactants interact to form products
7 0
3 years ago
Herbivores are animals that eat plants. Carnivores are animals that eat other animals. The table shows data about several carniv
Tanzania [10]

Answer:

A.  Herbivores have longer digestive systems than carnivores have.

Explanation:

We can conclude that the herbivores have longer digestive systems compared to carnivores.

Carnivores feeds on other animals whereas herbivores eats plants.

  • Most herbivores have a four stomach compartment system that helps them process and digest their food.
  • This is because they have to process cellulose in plants which needs to be properly broken down.
  • Flesh eating carnivores do not require this arrangement.
  • The four stomach compartment of most herbivores includes Rumen, Reticulum, omasum and abomasum.
  • They also chew the cud whereby they regurgitate food materials.
4 0
2 years ago
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What form (what compound) is the carbon in?
Kamila [148]
Compounds that primarily contain carbon are known as organic compounds.
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3 years ago
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