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
Alenkinab [10]
3 years ago
9

I NEED HELP FAST PLEASE *please answer correctly* Will mark brainliest thank you!!

Chemistry
2 answers:
Dimas [21]3 years ago
8 0

Answer:

i dont know that plzzz help me tooooo

yKpoI14uk [10]3 years ago
5 0

Answer:

Explanation:

Using Charles Law ,

\frac{V1}{T1}=\frac{V2}{T2}

Using this formula we have ,

V1= 200cm^3

T1=40+273.15 = 313.15 K

T2 = 100+273.15 = 373.15 k

V2= ?

Hence using above formula simplify it we will get ,

V2 = 238.3 cm^3

You might be interested in
Which of the following mass units is the largest? a) 1 cg b) 1 dg c) 1 mg d) 1 ng
N76 [4]

Answer: option b) 1 dg

Explanation:

1) These are the different equivalences of those quantities:

a) 1 g = 100 cg ⇒ 1 cg = 0.01 g

b) 1 g = 10 dg ⇒ 1 dg = 0.1 g

c) 1 g = 1000 mg ⇒ 1 mg = 0.001 g

d) 1g = 10⁹ g ⇒ 1 ng = 10 ⁻⁹g

2) Now that you have all the masures in grams you can compare:

0.1g > 0.01g > 0.001g > 10 ⁻⁹g

3) So, the largest value is 0.1g which is 1 dg.

4 0
3 years ago
Read 2 more answers
Animals breathe oxygen and release carbon dioxide during cellular respiration according to the equation below. How much oxygen i
kifflom [539]

Answer:

14.544 g of oxygen is needed to produce 120 grams of carbon dioxide.

Explanation:

Animals take in oxygen and breathe out carbon dioxide during cellular respiration. The reaction for the metabolism of the food in the animal body is:

C_6H_{12}O_6 + O_2 \rightarrow 6CO_2 + 6H_2O + Energy

As can be seen from the reaction stoichiometry that:

<u>6 moles of carbon dioxide gas can be produced from 1 mole of oxygen gas in the process of metabolism of glucose.</u>

Also,

Given :

Mass of carbon dioxide gas = 120 g

Molar mass of carbon dioxide gas = 44 g/mol

The formula for the calculation of moles is shown below:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus, moles of carbon dioxide are:

moles_{CO_2} = \frac{120 g}{44 g/mol}

moles_{CO_2} = 2.7273 mol

As mentioned:

<u>6 moles of carbon dioxide</u> gas can be produced from <u>1 mole of oxygen gas</u> in the process of metabolism of glucose.

<u>1 mole of carbon dioxide</u> gas can be produced from <u>1/6 mole of oxygen gas</u> in the process of metabolism of glucose.

<u>2.7273 mole of carbon dioxide</u> gas can be produced from <u>\frac{1}{6} \times 2.7273 moles of oxygen gas</u> in the process of metabolism of glucose.

Thus, moles of oxygen gas needed = 0.4545 moles

Molar mass of oxygen gas = 32 g/mol

The mass of oxygen gas can be find out by using mole formula as:

moles = \frac{Mass\ taken}{Molar\ mass}

Thus,

Mass\ of\ oxygen\ gas = Moles \times Molar mass}

Mass\ of\ oxygen\ gas = 0.4545 \times 32}

Mass\ of\ oxygen\ gas = 14.544 g

<u>14.544 g of oxygen is needed to produce 120 grams of carbon dioxide.</u>

3 0
3 years ago
Read 2 more answers
I NEED ANSWERD ASAP !!!!
gavmur [86]
It depend on what kind of seed it is.
6 0
3 years ago
Which units are used to measure both velocity and speed? Select 3 correct choices.
poizon [28]

Answer:

km/h

mph

iph

Explanation:

I have no idea what mis or dit could be

km/h is kilometers per hour

mph is miles per hour

I assume iph is inches per hour?

4 0
3 years ago
Which distinguishes an atom of one element from an atoms of a different element?
dalvyx [7]

Answer:

The number of protons you welcome

Explanation:

7 0
3 years ago
Other questions:
  • Radioactivity was discovered around: <br> 1600 <br> 1700<br> 1800<br> 1900
    6·2 answers
  • How much energy is required to raise the temperature of 3 kg of aluminum
    9·1 answer
  • What is the older name for lanthanides and actinides?
    13·1 answer
  • Based on the Lewis/electron dot representation
    6·1 answer
  • Which is true about each element in a period or horizontal row of the periodic table?
    10·1 answer
  • Please help me ill give brainiest to the right answer
    12·2 answers
  • How many milliliters of an aqueous solution of 0.227 M sodium carbonate is needed to obtain 3.55 grams of the salt?
    15·1 answer
  • Which of the following statements is true?
    15·2 answers
  • What happen when molten zinc bromide is electrolysised
    14·1 answer
  • Why do you think lone pairs of electrons create greater repulsion when located near other
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!