3 years ago

If a car travels 400 meters in 20 sec how fast is it going

Chemistry

2 answers:

pochemuha3 years ago

7 0

Answer:

400 meters every 20 seconds

Explanation:

mihalych1998 [28]3 years ago

5 0

Clarify the distance needed, miles? Kilometers? Feet?

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0.01040 m as an integer

SpyIntel [72]

Answer:

Here,

0.01040 m as an integer= 1.04 × 10-2

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2 years ago

How many formula units make up 36.0 g of magnesium chloride (MgCl2)?

zalisa [80]

Answer: There are $2.29\times 10^{23}$ formula units

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number $6.023\times 10^{23}$ of particles.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}=\frac{36.0g}{95g/mol}=0.38moles$

1 mole of $MgCl_2$ contains = $6.023\times 10^{23}$ formula units

Thus 0.38 moles of $MgCl_2$ contains = $\frac{6.023\times 10^{23}}{1}\times 0.38=2.29\times 10^{23}$ formula units

Thus there are $2.29\times 10^{23}$ formula units

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3 years ago

. Magaling ako sa barirala o

Nat2105 [25]

Answer:

I'm good at grammar or

Explanation:

I hope this Spanish

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2 years ago

How many grams of oxygen are in 50.00 g of sucrose? Show your work

Marta_Voda [28]

Just find the percent mass of oxygen in sucrose again. and then multiply that by 50.00.

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2 years ago

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On average, tectonic plates move approximately 3 cm per year; about as fast as your fingernails grow

V125BC [204]

True the answer is true :) have a nice day

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