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Flura [38]
3 years ago
13

Help for a magazine article on horses for my little sister:

Chemistry
1 answer:
Maksim231197 [3]3 years ago
6 0

Answer:

Elizabeth Madden. Palomino.  2-3 years old. Horses can sleep both lying down and standing up.  Horses can run shortly after birth.  Domestic horses have a lifespan of around 25 years. Ride a bike.

Explanation:

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Carbon dioxide from the air is used to make sugars during ______________________ .
Vlad [161]
Carbon Dioxide from the air is used to make sugars during the Photosynthesis.
The Photosynthesis is a process in which green plants uses the sunlight to create dioxygen and their  food.
The formula of the dioxygen is: 6HO2 + 6CO2 --> C6H12O6 + 6O2
We can clearly see the formation of Glucose, a kind of sugar, from his presence in the product part: C6H12O6

Hope this Helps! :)
8 0
3 years ago
The volume of a gas is 27.5 mL at 22.0°C and 0.974 atm. What will the volume be at 15.0°C and 0.993 atm? Use Ideal Gas Law (PV =
Scorpion4ik [409]

Answer:

26.3 mL

Explanation:

Step 1:

Obtaining an appropriate gas law from the ideal gas equation.

This is illustrated below:

From the ideal gas equation:

PV = nRT

Divide both side by T

PV/T = nR

At this stage, we'll assume the number of mole (n) to be constant.

Note: R is the gas constant.

PV/T = constant.

We can thus, write the above equation as:

P1V1/T1 = P2V2/T2

The above equation is called the general gas equation.

Step 2:

Data obtained from the question. This includes the following:

Initial volume (V1) = 27.5 mL

Initial temperature (T1) = 22.0°C = 22.0°C + 273 = 295K

Initial pressure (P1) = 0.974 atm.

Final temperature (T2) = 15.0°C = 15.0°C + 273 = 288K

Final pressure (P2) = 0.993 atm

Final volume (V2) =..?

Step 3:

Determination of the final volume of the gas using the general gas equation obtained. This is illustrated below:

P1V1 /T1 = P2V2/T2

0.974 x 27.5/295 = 0.993 x V2/288

Cross multiply to express in linear.

295x0.993xV2 = 0.974x27.5x288

Divide both side by 295 x 0.993

V2 = (0.974x27.5x288)/(295x0.993)

V2 = 26.3 mL

Therefore, the new volume of the gas is 26.3 mL

4 0
3 years ago
On the diagram below, circle the position of the where the southern hemisphere is experiencing spring. Justify your answer
luda_lava [24]

Answer: D

Explanation:

The sun shines the sputhern hemisphere fully on the top= summer

the sun shines somewhat towards the Southern Hemisphere but itfaces away= fall

sun doesnt show at the bottom= winter

faces it more than example b= D

5 0
3 years ago
Read 2 more answers
A solution is made by dissolving 373.5 g of Pb(NO3)2 (molar mass: 331.2 g/mol) in 2.00 × 103 g of water. What is the molality of
hram777 [196]
Answer:
molality = 0.564 m

Explanation:
Molality =  number of moles of solute / kg of solvent

1- getting moles of solute:
number of moles = mass / molar mass
we have:
mass = 373.5 g
molar mass = 331.2 g/mol
Therefore:
number of moles = 373.5 / 331.2 = 1.128 moles

2- getting kg of solvent:
mass in kg = mass in grams * 10⁻³
mass in kg = 2 * 10³ * 10⁻³
mass in kg = 2 kg

3- getting molality:
Molality =  number of moles of solute / kg of solvent
Molality = 1.128 / 2
Molalty = 0.564 m

Hope this helps :)
7 0
3 years ago
Read 2 more answers
Science is a unique field of thought because it relies on _______ to describe the world. A Teachers and students B Observations
Norma-Jean [14]

Answer:

B) Observations and experimentation

Explanation:

this is the most suitable words to describe how is Science used in describing the world. we collect the  knowledge in organized way and provide it with explanations and start to predict about the future world

ِAny Inventions are based on Science and no Inventions without Observations and experimentation

No one of us have went to a chemistry or a physics labs without using Observations and experimentation

6 0
3 years ago
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