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Leni [432]
3 years ago
6

A parachute on a racing dragster opens and changes the speed of the car from 85 m/s to 45 m/s in a period of 4.5 seconds. What i

s the acceleration of the dragster?
Chemistry
2 answers:
LiRa [457]3 years ago
7 0

Answer:

- 8.89 m/s^{2}

Explanation:

\frac{(Vf-Vo)}{time} =  \frac{(45-85 m/s)}{4.5s} = - 8.89 m/s^{2}

goblinko [34]3 years ago
6 0

Answer:

L I'll help u

Explanation:

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777dan777 [17]

Answer:

yellow goes under...... for example.

7 0
3 years ago
What are the units for Rf values? Please help!
gayaneshka [121]

Answer:

Microwatts.

Explanation:

RF + EMF Unit Conversion Charts: Interpreting exposure levels. When measuring Radio Frequencies, the most common units of measurement are microwatts per square meter (µW/m2), microwatts per square centimeter (µW/cm2) and volts per meter (V/m).

5 0
3 years ago
what mass of calcium carbonate (in grams) can be dissolved by 4.1 g of hcl ? ( hint : begin by writing a balanced equation for t
il63 [147K]

Mass of calcium carbonate (in grams) can be dissolved by 4.1 g of Hcl is 5.62g.

<h3>What is balanced equation?</h3>

A balanced equation is one for a chemical reaction in which the overall charge and the number of atoms for each component are the same for both the reactants and the products. In other words, the mass and charge of both sides of the reaction are equal.

The reaction between calcium carbonate and hydrochloric acid can be expressed through the chemical reaction,

CaCO₃ + 2HCl --> CaCl₂ + H₂O + CO₂

Hydrochloric acid has a molecular weight of 36.45 g/mol compared to calcium carbonate's molecular weight of 100 g/mol. According to the equation above, 72.9 g of hydrochloric acid may dissolve 100 g of calcium carbonate.

x = (4.1 g HCl)(100 g CaCO3 / 72.9 HCl)

x = 5.62 g.

To know more about  balanced equation visit:

brainly.com/question/7181548

#SPJ4

5 0
1 year ago
An atom of nitrogen would be stable if it bonded with how many atoms of chlorine?
musickatia [10]
As known, nitrogen could form 3 bonds based on octet rule, because it has 5 valence electrons. That means it needs 3
6 0
3 years ago
Which type of matter can be separated only by physical change
Marta_Voda [28]

Answer:

Mixture

Explanation:

Mixtures are a physical combination of two or more substances. They can be separated based only by physical means.

7 0
3 years ago
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