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Ne4ueva [31]
3 years ago
15

Two students make a model of a tree house they want to build. the scale is 1:42 in the scale model the tree house door is 3 cm t

all
How tall should the real house door be?
Chemistry
1 answer:
Flura [38]3 years ago
4 0

Answer:126

Explanation:

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Gasoline has a density of 0.749 g/mL. There are 454 grams in a pound and 3.7854 litres in a gallon. How many pounds does 19.2 ga
alexgriva [62]

Answer:

119.9 pound

Explanation:

Given data:

Density of gasoline = 0.749 g/mL

Volume of gasoline = 19.2 gal (19.2× 37854 =72679.9 mL)

Mass = ?

Solution:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

Now we will put the values in formula:

d = m/v

0.749 g/mL = m/ 72679.9 mL

m = 54437.25 g

gram to gallon:

54437.25/ 454

m = 119.9 pound

7 0
3 years ago
Classify each of the following as abiotic or biotic.
mars1129 [50]

Answer:

<h3>D. </h3>

Explanation:

<h3>#I'm not sure</h3><h3>#happy learning</h3>
7 0
2 years ago
Read 2 more answers
What happens to the population growth in a logistic growth pattern as it approaches carrying capacity?
AveGali [126]
B. slows down is your answer, obviously as it approaches carrying capacity, there would be less available space to find in the place of inhabitance, so less and less population units would be able to find the place of inhabitance suitable for living, or can't find enough space to live in.
6 0
2 years ago
Determina el pH del café cuya concentración de H+ es de 0.00001M
lara31 [8.8K]

Answer:

5

Explanation:

Given parameters:

Hydrogen ion concentration  =  0.00001M

Unknown:

pH of the solution =?

Solution:

The pH is used to estimate the degree of acidity or alkalinity of a solution. To solve for pH of any solution, we use the expression below;

          pH  = -log [H⁺]

[H⁺] is the hydrogen ion concentration

        pH  = -log (1 x 10⁻⁵)

      pH = -(-5) = 5

4 0
3 years ago
What is the birds and the bees
Strike441 [17]
Basic facts about sex and reproduction, as told to a child
8 0
2 years ago
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