Step-by-step explanation:
1. N2 + 3H2 → 2NH3
How many moles of NH3 could you make with 4.2021 g of N2?
From the reaction;
1 mol of N2 produces 2 mol of NH3
1 mol of N2 = 14g of N2
14g of N2 produces 2 mol of NH3
4.2021 g of N2 produces x mol of NH3
14 = 2
4.2021 = x
x = 4.2021 * 2 / 14 = 0.6003 mol of NH3
2. 2Na + Cl2 → 2NaCl
How many moles of Cl2 do you need to use in order to react with 34.485 g of Na?
From the equation of the reaction;
2 mol of Na reacts with 1 mol of Cl2
1 mol of Na = 23g of Na
2 mol of Na - 46g of Na
46g of Na reacts with 1 mol of Cl2
4.485 g of Na reacts with x mol of Cl2
46 = 1
4.485 = x
x = 4.485 * 1 / 46 = 0.0975 mol of Cl2
3. H2SO4 + 2NaNO2 → 2HNO2 + Na2SO4
How many grams of NaNO2 do you need in order to make 24.14714 g of Na2SO4?
From the reaction;
2 mol of NaNO2 produces 1 mol of Na2SO4
2 mol of NaNO2 = 68.995 g/mol * 2mol = 137.99g
1 mol of Na2SO4 = 142.04 g
137.99g of NaNO2 produces 142.04 g of Na2SO4
xg of NaNO2 produces 24.14714 g of Na2SO4?
137.99 = 142.04
x = 24.14714
x = 24.14714 * 137.99 / 142.04 = 23.459g
4. 2Na + 2H2O → 2NaOH + H2
How many grams of NaOH could you make with 8.0465 g of Na?
From the reaction;
2 mol of Na produces 2 mol of NaOH
2 mol of Na = 23g/mol * 2mol = 46g
2 mol of NaOH = 40g/mol * 2 = 80g
46 g of Na produces 80g of NaOH
8.0465 g of Na produces xg of NaOH
46 = 80
8.0465 = x
x = 8.0465 * 80 / 46 = 13.994g
5. 2Mg + O2 → 2MgO
If you are burning 5.8332 g of Mg, how many grams of MgO will this make?
From the reaction;
2 mol of Mg produces 2 mol of MgO
2 mol of Mg = 24 g/mol * 2mol = 48g
2 mol of MgO = 40.3 g/mol * 2mol = 80.6g
48g of Mg produces 80.6 g of MgO
5.8332 g of Mg produces xg of MgO
48 = 80.6
5.8332 = x
x = 5.8332 * 80.6 / 48 = 9.8g
6. FeCl3 + 3NaOH → Fe(OH)3 + 3NaCl
How many grams of NaCl could you make with 2.43306 g of FeCl3?
From the reaction;
1 mol of FeCl3 produces 3 mol of NaCl
1 mol of FeCl3 = 162.2 g
3 mol of NaCl = 58.44 g/mol * 3 mol = 175.32 g
162.2g of FeCl3 produces 175.32 g of NaCl
2.43306 g of FeCl3 produces xg of NaCl
162.2 = 175.32
2.43306 = x
x = 2.43306 * 175.32 / 162.2 = 2.63g
Decide which shipping box (or combination of boxes) she should use to ship exactly 270 necklaces.
pls dont say random stuff to get points
Answer:
C) 3 1/4
Step-by-step explanation:
What is the value of ?
86°
84°
?
360
Helpppo !
hello My name es Liliana y arigato bye
Answer:
?????.... hii erica herrrr
Answer:
Hi Liliana i love your name! it's very pretty:) my name is Melody
Step-by-step explanation:
will make brainliest with correct answer
Answer:
10
Step-by-step explanation:
8² = 64
6² = 36
64 + 36 = 100
√100 = 10
The weight of a baby dog on day one is 5 kilograms. Every day, the dog grows an additional 0.1 kilograms. How heavy the dog is after 10 days?
Unit rate is the quantity of an amount of something at a rate of one of another quantity.
The weight of the dog after 10 days is 5.9 kg.
What is a unit rate?It is the quantity of an amount of something at a rate of one of another quantity.
In 2 hours, a man can walk for 6 miles
In 1 hour, a man will walk for 3 miles.
We have,
Weight of the baby on day one = 5 kg
This can be written as,
1 day = 5 kg
The dog grows 0.1 kg each day.
This means,
On the 2nd day, we get,
2 days = 5 + 0.1
2 days = 5.1 kg
The expression for the weight of the dog on n days can be written as,
n days = 5 + (n -1) x 0.1 _____(1)
Now,
After 10 days we get,
n = 10
From (1) we get,
10 days = 5 + (10 - 1) x 0.1
10 days = 5 + 9 x 0.1
10 days = 5 + 0.9
10 days = 5.9 kg
Thus,
The weight of the dog after 10 days is 5.9 kg.
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The divisor times the quotient plus the remainder will give you the dividend.
True or False
A youth organization decided to go to the movies,
Adult tickets cost $7.00 each, and youth tickets cost $5.00 each. If four
adults purchased tickets, and the total bill cost of the outing was $118.00,
how many youth attended went to the movies?
Answer:
7x + 5y = C
Step-by-step explanation:
Answer:
18 children
Step-by-step explanation:
4x$7=$28
$118-$28=90
90 divided by $5
18if you complete it and it's correct I give you (brainlist)help
Answer:
1. 9
2. 122cm squared
3. 189m
4. 30
5. b
Step-by-step explanation:
1. 27,36,45,54,63,72,81,90,99
2. 12x6=72 10x5=50 50+72=122
3. 21x9=189
4. 5x12=60 60/2=30
5 b because 150 divided by 4 doesn't give you a whole number.
Solve the simultaneous equations
8x + 3y = 45
2x + 3y = 27
x = 3 and y = 7 are the answers to the simultaneous equations 8x + 3y = 45 and 2x + 3y = 27.
What are linear equations?A linear equation is an equation that describes a straight line on a coordinate plane. It is an equation of the form y = mx + b, where x and y are variables, m is the slope of the line, and b is the y-intercept (the point where the line intersects the y-axis).
To solve the simultaneous equations:
8x + 3y = 45 ...(1)
2x + 3y = 27 ...(2)
By adding or removing equations, we can utilise the procedure of elimination to get rid of one of the variables. In this situation, y can be removed by deducting equation (2) from equation (1) as shown below:
(8x + 3y) - (2x + 3y) = 45 - 27
6x = 18
x = 3
In order to obtain the value of y, we can now change the value of x in either equation (1) or (2). Consider using equation (1):
8x + 3y = 45
8(3) + 3y = 45
24 + 3y = 45
3y = 45 - 24
3y = 21
y = 7
Therefore, the solution to the simultaneous equations 8x + 3y = 45 and 2x + 3y = 27 is x = 3 and y = 7.
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at the drive in it cost 5 dollars per vehicle plus 2 dollars per person in the vehicle construct an equations from this information
Answer:
5v+2d
Step-by-step explanation:
Hope I helped
The ratio of cars to trucks in a shopping mall is 3 cars to 7 trucks. What is the ratio of trucks to cars? 3:10 3:7 7:3 7:10
Answer: 7:3
Step-by-step explanation:
From the question, we are given the information that the ratio of cars to trucks in a shopping mall is 3 cars to 7 trucks.
The ratio of trucks to cars will simply be the reverse of the ratio given. This will be: = 7:3
Answer:
7:3
Step-by-step explanation:
it says what is the ratio of truck to cars so how many trucks are there? 7 trucks . and how many cars are there? 3 cars so it is 7:3 because there are 7 trucks and 3 cars so you put both of them together there is your answer. Ratio's are very easy.
I’m sorry if I keep asking question im not smart but what the answer to both of them thank you
1a simplify 6x × 3y
Solve the system.... 2y+8x+58 and y-5x=11
Answer:
x=2, y=21
Step-by-step explanation:
there are two methods: substiution and elimation. I will be doing subtistution in this soultion:
first isolate y in either equation, it would be easier to do it in the second one.
y= 11+5x
Then, subtitute that into the first equation
2(11+5x)+8x=58 (it says 2y+8x+58 but I assume you mean 2y+8x=58?)
22+10x+8x=58
18x = 36
x=2
substitute that back into y = 11+5x, to get y=11+10 = 21
Please help. I’ll give brainliest
Answer:116.886
Step-by-step explanation:multiply all the sides then devide by 1/2
Answer:
15.312
Step-by-step explanation:
what times 60 equals 105
Answer:
1.75
Step-by-step explanation:
To do this you would have to do
105/60=1.75
so that would be the answer
need help plz help me
Answer:
The last one t/5-6=-3
Step-by-step explanation:
All you have to do is plug in 15 to each equation, knowing this if you add 15 into this equation you would get 15/5-6=-3 and this is true because 15/5=3, 3-6=-3!
I hope this helps and have a great day!
round off 599 to 2 significant figure
Answer:
6.0 × 10⁰
Step-by-step explanation:
599 has 3 significant figures
Kim drew a map of the Mississippi River. The scale was 5 centimeters represents 120 miles. The actual length of the Mississippi River is 360 miles. Approximately what is the length in centimeters of the Mississippi River on the map?
50 points to who ever answer it corectly
Answer:
15 cm on the map
Step-by-step explanation:
360/120=3
5*3=15
hope this helps :)
Identify the horizontal asymptote of each graph.
y = 0
y = 1
y = 6
Identify the horizontal asymptote of each graph.
y = 0
y = –3
y = –5
Answer:
y = 0 and y = -3
Step-by-step explanation:
The horizontal asymptote of each graph is:
1. y=0
2. y= -3
What is asymptote?An asymptote of a curve y = f (x) that has an infinite branch is called a line such that the distance between the point (x, f (x)) lying on the curve and the line approaches zero as the point moves along the branch to infinity.
1.Given function:
t(x)= [tex]6^{x}[/tex]
If we apply limit x→∞, then we get y=c as horizontal asymptote
So, [tex]\lim_{x \to \infty} 6^{x}[/tex]= 0
Hence, the asymptote will by y=0.
2. Given function:
t(x)= [tex]5^{x}[/tex]-3
If we apply limit x→∞, then we get y=c as horizontal asymptote
So, [tex]\lim_{x \to \infty} 5^{x} -3[/tex]= -3
Hence, the asymptote will by y=-3.
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n: (2x4 + 6x² + 5x° - 45)(x + 3)
Answer:
54565
Step-by-step explanation:
234
Which type of function is shown in the table below.
Answer:
it is a not a function
Step-by-step explanation:
if you times 51 that's a hundred
What is the missing lenght of X and Y?
Answer:
D. x = 2, y = 2
Find the slope of the line that passes through the points (1,-4) and (3,-1).
Answer:
(2,3)
Step-by-step explanation:
you go up 3 and forward 2 so it would be positive positive.
Determine the intercepts of the line x-intercept
Answer:
I dont know if you meant where it intercepts the x line or y line so for the x line it intercepts at -7.5 but for y line it intercepts at 5.5
How big is it? I need to know like fr
Answer:
10 in
Step-by-step explanation:
Answer:
i got a 6 inch it ain't that small
find the missing side length
Answer:
a
Step-by-step explanation:
The cost for 16 ounces of cheese is $3.20. What is the cost for 20 ounces of cheese? The cost for 20 ounces of cheese is $
Answer:
Step-by-step explanation:
687.68 divided by 0.7
Answer:
784.14
Step-by-step explanation:
Answer:
982.4
Step-by-step explanation:
Please Brainiest It will help me get to my quest!!??!?!
