HELP PLS!!!! Will give brainliest!!
What mass of water will be produced if 125.00 moles of oxygen are reacted completely?
Answer:
250 moles of H2O
Explanation:
I assume THIS is the equation you are using:
2H2 + O2 =====> 2 H2 O
each mole of O2 results in twice as many H2O moles
so 250
Cattle egrets are birds that follow behind grazing cattle. The egrets eat the bugs that fly out of the grass as the cattle walk through. Which statement describes the relationship between the cattle egrets and the cattle?
A
predation, because the cattle egrets eat the bugs
B
mutualism, because both the cattle egrets and the cattle benefit
C
commensalism, because the cattle egret benefits, but the cattle neither benefits nor is harmed
D
parasitism, because the bugs might have bit the cattle egrets or the cattle and caused them harm
Answer: I think it's
Is H2O an acid, ionic, or covalent compound?
Answer:
Covalent Compound
Explanation:
H₂O is a covalent compound due to the electronegativity difference between hydrogen and oxygen. Covalent compounds involve elements with similar electronegativity values. Hydrogen has an EN value of 2.2 and oxygen has an EN value of 3.4. These values are not far enough apart to make them form ionic bonds between each other.
While water can act as an acid, it its purest form, H₂O is neutral.
How much volume (in cm^3)is gained by a person who gains 11.8 lb of our fat? Human fat has a density of 0.918 g/cm^3
The volume (in cm³) gained by a person who gains 11.8 lb of fat is 5830.49 cm³
What is density?The density of a substance is simply defined as the mass of the subtance per unit volume of the substance. Mathematically, it can be expressed as
Density = mass / volume
How to convert pounds to grams1 lb = 453.592 g
Therefore,
11.8 lb = 11.8 × 453.592
11.8 lb = 5352.3856 g
How to determine the volume Mass = 5352.3856 gDensity = 0.918 g/cm³Volume =?Volume = mass / density
Volume = 5352.3856 / 0.918
Volume = 5830.49 cm³
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Could really use a few pointers on this question!
From the calculations, we can see that the theoretical yiled of NO2 is 100L of NO2
What is the theoretical yield?The theoretical yield is that calculated from the stoichiometry of the reaction.
We can see that 1 mole of O2 produced 2 moles of NO2. Thus;
2.23 moles of O2 will produce 4.46 moles of NO2
Since 1 mole of NO2 occupies 22.4 L
4.46 moles of NO2 occupies 100L of NO2
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Why does silver not react with cold water? Reference to the reactivity series
Answer:
Silver does not react with cold water, because as in the Reactivity Series, Silver is highly unreactive/least reactive metal.
Answer:
Because silver is inert towards cold water.
The liquid iodomethane has a density of 2.28 g/mL at 20.0°C. If a 109 gram sample of this compound is needed, what volume of the liquid at 20.0°C must be provided?
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Determine the grams of protein in one cup of soup that has 140 kcal with 8 g of carbohydrate and 2 g of fat.
There are 22.5 grams of protein in one cup of soup that has 140 kcal with 8 g of carbohydrate and 2 g of fat.
What is the mass of a substance?The mass of a substance is the quantity of the substance that is being measured in grams or kilograms.
To determine the energy from the 8g of carbohydrate, we have:
= 8g × 4 kcal/g (the corresponding calories of food type)
= 32 kcal
The energy from 2g of fat = 2g × 9 kcal/g
= 18 kcal
The energy from protein is calculated as:
= 140 kcal - 32 kcal - 18 kcal
= 90 kcal
The required mass of the protein in grams is:
[tex]\mathbf{= 90 \ kcal \times \dfrac{1}{4 \ kcal }}[/tex]
= 22.5 grams
Therefore, we can conclude that there are 22.5 grams of protein in one cup of soup.
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FLAG A nurse is preparing to administer morphine 0.05 mg/kg intermittent IV bolus to a newborn who weighs 3 kg. Available is morphine 0.5 mg/mL injection. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The quantity of morphine, the nurse should administer is 0.3 ml.
What is morphine?Morphine is a drug which comes under the pain relieving drugs.
The quantity of morphine is 0.05 mg/kg
The weight of the baby is 3 kg.
Available morphine is 0.5 mg/mL.
0.05 x 3 = 0.15 mg
then, 0.15 mg / 0.5 = 0.3
Thus, the quantity of morphine, the nurse should administer is 0.3 ml.
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Why do you think most lampshades are made of translucent materials instead of transparent materials?
Explanation:
because translucent shades lets the light through easily (gentle diffusion)
the mass of substance is measured in what ?
There are 0.45 moles of Kr gas at a pressure of 1.35 atm and a temperature of 35°C. What volume would this gas occupy? (R= 0.0821 Mh/*))
Apply ideal gas equation
PV=nRTV=nRT/PV=0.45(0.0821)(273+35)/1.35V=0.45(0.0821)(308)/1.35V=8.42LUse ideal gas equation
PV=nRT1.35V=0.45(308)(0.0821)135V=11.379V=8.4Lwhich of the following symbol means a subtance is in water solutions?
a) (aq) b.) (w) c.) (s) d.) (I)
Answer:
a.) (aq)
Explanation:
(aq) means aqueous
so its in a solvent